Exercise

Exercise is one of the best things you can do for your mind and body. Combine all the topics discussed at Back to Basics and you can create a holistic approach to your health: head, heart, and hand. If you eat, sleep, and drink well, your exercising will be far more enjoyable. Seven plus hours of quality sleep, drinking water consistently, and eating a well-balanced whole-food diet are a few health habits I am consistently trying to follow. With these intact, your workouts become dynamic.

Movement Is A Human Requirement

Exercise matters because movement is one of the most democratic forms of health. Walking does not ask you to become a different person. Strength training does not have to be punishment. Play, hobbies, stairs, yard work, sports, dancing, lifting, hiking, biking, and chasing your kids all remind the body that it was made to do things.

The science is broad and unusually consistent: physical activity is associated with better cardiometabolic health, mood, cognition, bone, muscle, independence, and quality of life. The exact dose can be debated, but the first-principles idea is simple. A body that is never asked to adapt eventually loses capacity. A body given honest stress and recovery becomes more resilient.

Exercise is not punishment for eating. It is how the body remembers it is alive. Muscle is metabolic infrastructure: it stores glycogen, pulls glucose from the blood, supports joints, protects bone, and gives the nervous system a stronger frame to live through. Cardiorespiratory fitness is not just an athlete number either. It is the ability to walk uphill, carry groceries, play with kids, recover from stress, and handle the ordinary demands of being useful.

The research keeps pointing back to the same humble truth. In a 15-cohort step-count meta-analysis, more daily steps were associated with lower all-cause mortality up to levels that varied by age. Muscle-strengthening research, including a systematic review and meta-analysis, links strength work with lower mortality risk too. These studies do not prove every workout causes longer life by itself. They give a strong signal that walking, lifting, carrying, playing, and building capacity are not vanity. Movement is freedom expressed through tissue.

According to the CDC adult physical activity guidelines, adults should get at least 150 minutes of moderate-intensity aerobic physical activity each week and 2 days of muscle-strengthening activity. The CDC guidelines for children and adolescents recommend 60 minutes or more of moderate-to-vigorous physical activity daily. Aerobic exercise includes walking, running, swimming, skating, biking, and whatever gets your body moving. Moderate exercise can be simplified as an activity where you can still hold a conversation.

With that said, the best way to reach these minimums is to start somewhere. These guidelines are a good beginning point to help protect yourself against chronic disease, but do not get discouraged if you are not there yet. Everyone is different. The perfect place to start is exactly where you are.

What The Strongest Exercise Evidence Says

The first-principles view is that exercise is not one single thing. It is a mechanical signal to bones, tendons, joints, and muscles. It is a metabolic signal to blood sugar, mitochondria, and insulin sensitivity. It is a cardiovascular signal to the heart, blood vessels, blood pressure, and lungs. It is a nervous-system signal to stress tolerance, mood, sleep, attention, and confidence. That is why exercise can look like walking, lifting, cycling, swimming, skating, hiking, dancing, playing a sport, doing yard work, or structured rehab after a major medical event. The body does not only understand “workout.” The body understands repeated signals.

The strongest population-level evidence points in a simple direction: moving more is associated with lower risk. A 2023 dose-response meta-analysis in the British Journal of Sports Medicine pooled 196 articles, 94 cohorts, and more than 30 million participants. The authors found that higher non-occupational physical activity was associated with lower risk of all-cause mortality, cardiovascular disease, cancer, and several site-specific cancers. The most important part is not that everyone needs to become extreme. The biggest marginal benefit showed up when inactive adults moved toward the equivalent of 150 minutes per week of moderate-to-vigorous aerobic activity, and the authors estimated that 15.7% of premature deaths among insufficiently active people could have been avoided if they had reached that level.

That kind of study is powerful because it is huge and consistent, but it is still mostly observational. People who move more may also differ in food quality, smoking, income, social support, sleep, healthcare access, and other variables. So I do not read that evidence as “exercise magically fixes everything.” I read it as a very strong public-health signal that the body is designed to move and that designing movement out of life has consequences.

Step-count research makes the same point in plain English. A 2022 Lancet Public Health meta-analysis of 15 international cohorts followed 47,471 adults and recorded 3,013 deaths over a median 7.1 years. More daily steps were associated with lower all-cause mortality, with benefits leveling around 6,000 to 8,000 steps per day in older adults and 8,000 to 10,000 steps per day in younger adults. That does not mean a watch owns your life. It means walking is not a cute side habit. Walking is a foundational human behavior.

Strength training deserves the same respect. A 2022 systematic review and meta-analysis in the British Journal of Sports Medicine found that muscle-strengthening activity was associated with roughly 10% to 17% lower risk of all-cause mortality, cardiovascular disease, total cancer, diabetes, and lung cancer. The review also found that combining aerobic activity with muscle-strengthening activity was associated with lower mortality than doing neither. From first principles, that makes sense. Muscle is not only for aesthetics. Muscle helps dispose of glucose, protects joints, supports posture, preserves independence, and gives the body somewhere useful to put energy.

The randomized-trial evidence is where exercise becomes even harder to dismiss. In the Diabetes Prevention Program, a landmark randomized trial in high-risk adults, the intensive lifestyle group reduced type 2 diabetes incidence by 58% compared with placebo, while metformin reduced incidence by 31%. That trial was not “exercise alone.” It included weight loss, diet, coaching, and physical activity. But that is the point. Holistic health works because the levers stack. Food, movement, sleep, stress, and environment do not live in separate bodies.

In people who already have coronary heart disease, the Cochrane review on exercise-based cardiac rehabilitation included 85 randomized controlled trials and 23,430 participants. Exercise-based rehab was associated with lower risk of myocardial infarction and hospitalization, improved health-related quality of life, and longer-term cardiovascular benefits. This matters because it shows that exercise does not have to be anti-medicine. The best version is the opposite: doctors, nurses, cardiac rehab teams, exercise professionals, patients, and families all working together so the person becomes more capable after the acute medical crisis.

Blood pressure gives another clean example. A 2023 large-scale network meta-analysis of 270 randomized controlled trials and 15,827 participants found that aerobic training, dynamic resistance training, combined training, high-intensity interval training, and isometric exercise training all reduced resting blood pressure, with isometric exercise showing the largest average reductions in that analysis. I would not turn that into a one-weird-trick wall-sit religion. I would turn it into a simpler lesson: blood vessels respond to physical challenge. The system adapts when it is asked to adapt.

Mental health is similar. A 2024 BMJ systematic review and network meta-analysis included 218 randomized trials and 14,170 participants and found that exercise reduced depressive symptoms, with walking or jogging, yoga, and strength training among the more effective and acceptable options. The authors were careful about evidence quality and bias because blinding people to exercise is nearly impossible. That honesty matters. Still, the pattern fits lived experience: movement changes state. It gives the mind a different internal chemistry, a different rhythm, and sometimes a different story about what the day can become.

For older adults, exercise can protect freedom in a very concrete way: fewer falls. The Cochrane review on exercise for preventing falls in community-dwelling older adults found high-certainty evidence that exercise reduces the rate of falls, with balance, functional training, resistance exercise, and Tai Chi-type programs playing important roles. That is not glamorous, but it is enormous. A fall can change a life. Strength, balance, coordination, and confidence are not luxuries. They are independence.

Cancer evidence also points in an interesting direction, with the right level of humility. A 2016 pooled cohort study in JAMA Internal Medicine followed 1.44 million adults and found that higher leisure-time physical activity was associated with lower risk for 13 of 26 cancer types. That is observational and should be read that way. But the newer CHALLENGE randomized trial in The New England Journal of Medicine is harder to wave away: in 889 patients after adjuvant chemotherapy for stage III or high-risk stage II colon cancer, a 3-year structured exercise program improved disease-free survival compared with health-education materials alone. That does not mean “exercise cures cancer.” It means movement may be part of serious survivorship care, and the healthcare system should keep studying how to make that practical, safe, and accessible.

Taken together, the exercise evidence does not point toward punishment. It points toward participation. The body wants a relationship with the world: ground, sunlight, gravity, breath, people, work, play, resistance, rhythm, and recovery. In a consumer-driven economy, it is easy to believe the next purchase is the missing piece. Sometimes the missing piece is the free one: walk, lift, play, breathe, recover, repeat.

That is the main argument of this post. Movement is not one more wellness category. It is the physical language of agency. The body adapts to what the day repeatedly asks of it, and modern life often asks the body to sit still, look down, outsource effort, and call that normal.

Children, Recess, And Screen Time

Children make the movement question even more obvious because children do not design the environment they are growing inside. They do not choose the length of the school day, the amount of recess, whether the neighborhood is walkable, whether the family has time after work, or whether a screen is waiting in every room. If a child is expected to sit most of the school day, ride in a car after school, complete homework on a screen, relax on a screen, and then somehow manufacture 60 minutes of movement through individual discipline, the system has already made health harder than it needs to be.

The CDC recommends that children and adolescents ages 6 to 17 get 60 minutes or more of moderate-to-vigorous physical activity every day. That is easier to reach when the school day protects movement instead of treating it as a reward after “real” learning is finished. CDC school-health guidance describes recess as supporting physical, social, emotional, and mental well-being. The American Academy of Pediatrics has also argued that recess should be protected daily personal time and should not be withheld for punishment or academic catch-up. That matters because taking away recess from the children who are already struggling may remove the very reset their body and attention need.

Recess alone does not solve childhood obesity, and we should not pretend it does. But recess is one of the cleaner first-principles interventions: children need to move; school controls many waking hours; therefore school should not design movement out of the day. A 2023 paper modeling school recess and overweight prevention estimated that elementary recess can meaningfully contribute to daily energy expenditure. That is the public-health logic: a healthier environment makes the healthy behavior less heroic.

Screen time belongs in the same conversation. Screen media can crowd out movement, push bedtime later, increase eating while distracted, and expose children to food marketing built to override normal appetite signals. A review in Pediatrics describes these pathways between screen media and obesity risk in children and adolescents. Current media-use reports, including the 2025 Common Sense Census, show that screens are not a small side habit anymore; they are part of the water children swim in. The point is not to shame parents. The point is to admit that a child surrounded by sitting, screens, ultra-processed food cues, and reduced outdoor play is being trained by the environment before they ever make a “choice.”

Some states are beginning to legislate recess minimums, which is a sign that the obvious had to become policy. Washington now requires at least 30 minutes of daily recess for many K-5 school days. California has moved toward protecting recess time, and Florida law requires at least 100 minutes of supervised, safe, and unstructured free-play recess each week for K-5 students in district schools. We can argue about the perfect number of minutes, but the larger question is better: why did ordinary childhood movement become something that needs legal protection?

I am a large advocate of combining lifting and cardio. I think both are necessary to gain the largest health benefits. Walking every day is an amazing health habit to create. Even if you can run a couple of miles, building walking into your day will have long-lasting benefits in your life. The American Heart Association notes that walking is safe, low-cost, easy to stick with, and does not require special skills or equipment. This fits perfectly with the Blue Zones idea of natural movement. Health does not always need to be complicated. Sometimes it is a walk, a hill, a garden, a bike ride, or a game with people you love.

I use the CDC as a guideline to give a basic measurement. Personally, I believe people should be active an hour every day, whatever that looks like. People stress over vigorous exercise when, in reality, health and wellness can be achieved through consistent enjoyable movement. I recently finished Spark by John J. Ratey, MD. The following benefits draw heavily from his book, and I recommend reading it to better understand the benefits of exercise on the brain. There are serious advantages to truly believing in something, and the mind is a powerful tool for healing and improving health.

Brain Function

Exercise can help our brains function optimally. Our brains are able to change over time; this is better known as neuroplasticity. Neuroplasticity can be simplified as the brain’s ability to change and create new connections. This means throughout our lives we possess the ability to make new memories and learn new skills.

Exercise can create new conditions for our brain to learn from and puts us in challenging situations. One way to utilize this science is to learn new movements and challenge yourself on a daily basis. In Spark, Ratey explains that exercise primes our state of mind and influences learning at the cellular level. The Back to Basics explanation is simple: exercise stimulates natural chemicals in your brain that trigger positive emotions and create potential for new synapses. Working out in the morning is a great idea because it helps the brain receive the stimulation needed to function at a high level throughout the day.

The CDC notes that some brain-health benefits happen immediately after moderate-to-vigorous physical activity, including improved cognition for children and reduced short-term feelings of anxiety for adults. Regular activity can also help keep thinking, learning, and judgment sharp as we age.

Stress And Anxiety

Stress can be a factor in chronic disease and can drain people’s energy. While exercise is technically a stressor, it builds our resilience to stress. In Spark, Ratey emphasizes the ability of exercise to help us handle future stressful situations. Think of exercise as training for stress. When exercise is done properly, our heart rate increases, body temperature rises, and breathing gets challenged. These are many of the same physical signals that happen under stress. Through exercise, we condition the body to respond instead of panic.

Exercise is also important for learning how to breathe. Nasal breathing should be the default method for lower-intensity work, while mouth breathing can be used strategically when intensity demands it. Nasal breathing calms the body and signals to the brain that we have everything under control, even if the workout is challenging.

In regard to anxiety, exercise creates similar benefits to the previously mentioned stress-reducing abilities. A recent review and meta-analysis reported that physical activity can reduce anxiety symptoms, and broader evidence suggests physical activity may help protect against anxiety symptoms and disorders. On top of the neurochemical benefits, exercise is a healthy distraction from whatever may be going on in your life. People find healthy escapes from “reality” in various physical activities and sports. Once again, exercise teaches your brain and body how to react to stressful situations while helping create a more balanced internal chemistry.

Aging, Muscle, And Bone

Improving aging means delaying the decline that does not have to arrive as quickly as our current culture makes it arrive. As humans age, we lose muscle mass, bone density, and cognitive ability. Weight lifting and aerobic exercise can strengthen muscles, support bone density, and optimize brain function. In regard to bone density, women who are more susceptible to osteoporosis should prioritize strength training in addition to cardio.

Research on progressive resistance training and resistance exercise and bone health supports strength training as a promising strategy for protecting bone and muscle. Exercising also decreases the likelihood of obesity, hypertension, and heart disease. We now know that exercise has major benefits for our brain, and this extends to aging. There is a growing body of literature pointing toward exercise and its ability to support healthy brain aging and potentially reduce risk factors related to cognitive decline and dementia.

Heart And Metabolic Health

Cardiovascular disease remains one of the leading causes of death in the United States, according to the CDC heart disease facts page. Inactivity and sedentary living are associated with increased cardiovascular events and premature death. The point is not to scare people; the point is that physical activity is one of the most evidence-backed, low-cost tools we have for improving cardiovascular and metabolic direction.

The paper Cardiovascular benefits of exercise describes how aerobic exercise improves cardiorespiratory fitness and favorably influences several cardiovascular disease risk factors. The Physical Activity Guidelines for Americans also emphasize that a single bout of moderate-to-vigorous physical activity can improve sleep, reduce anxiety symptoms, improve cognition, reduce blood pressure, and improve insulin sensitivity on the day it is performed. I’ll take one bout of exercise please and thank you.

Quality Of Life

There are thousands of reasons why physical activity improves quality of life. From experience, it creates a sense of accomplishment and a rush of energy. The blood gets pumping and the brain is flooded with amazing neurochemicals that have lasting benefits. In addition to the feeling, exercise can help with weight management. When cardio and strength training are combined, we can gain the largest long-term benefits: building more muscle, losing fat, protecting joints, improving insulin sensitivity, and becoming harder to kill.

Exercise is free and consistent compared to a one-time band-aid fix. This does not mean medication or medical care are bad. It means we should not ignore the free, foundational tools that make the body more capable. Exercise is not punishment. It is ownership. It is freedom. It is one of the clearest ways to remind yourself that you are not trapped inside a broken system. You can train. You can walk. You can lift. You can play. You can start where you are and build.

Well-Being And Better Work

A person’s mental and physical well-being is not separate from the way they show up at work. A tired, anxious, sedentary, sleep-deprived person may still be talented and responsible, but the body eventually sends the bill. Energy, attention, patience, creativity, decision-making, social trust, and resilience all depend on the health of the person doing the work. Organizations sometimes talk about productivity as if it is only a software problem, a management problem, or a motivation problem. Often, productivity is also a human health problem.

This does not mean companies should turn wellness into another surveillance system or use health language to squeeze more output from people. That is backwards. The better first principle is stewardship: an organization benefits when the people inside it are physically safer, mentally steadier, socially connected, and able to recover. The CDC workplace-health model describes workplace health programs as coordinated, systematic, and comprehensive efforts to improve employee well-being and organizational health. The U.S. Surgeon General’s workplace mental-health framework points to protection from harm, connection and community, work-life harmony, mattering at work, and opportunity for growth.

The humane conclusion should come first: people deserve to be healthy because they are people. The practical organizational conclusion follows. A review on mental health and workplace productivity found clear evidence that poor mental health, especially depression and anxiety, is associated with lost productivity. The World Health Organization also reports that depression and anxiety create major economic costs through reduced productivity. Healthier people miss less work, recover better, collaborate better, think clearer, and are more likely to stay engaged. A healthier workplace is not charity. It is good stewardship, good operations, and good business.

That, to me, is the Back to Basics mindset. Before buying the next device, supplement, or program, pause and ask what free input is missing. Am I walking? Am I lifting something? Am I getting outside? Am I sleeping enough to recover? Health does not have to start with a purchase. Sometimes the most powerful thing you can add is a habit that was sitting there the whole time, readily available and already provided to us by God.

The best exercise is also the kind you will actually come back to. Lifting is great. Walking is great. Hockey, basketball, pickleball, swimming, dancing, biking, hiking, yoga, yard work, playing with your kids, or chasing a dog around the yard can all count toward a more active life. Hobbies matter because joy makes consistency easier. Health should not feel like a punishment. Find activities you enjoy, breathe well while doing them, and let movement become part of who you are instead of another chore on the list.

Solutions And Ideas

• Protect recess and movement during the school day, including for older students. There should be meaningful time in the day dedicated to moving, playing, training, walking, or exercising in ways students can actually sustain. The school’s job should be to educate and provide opportunities.
• Give greater benefits to workers who utilize a gym membership or participate in physical activity. Health insurance and employers should incentivize people to use gyms, clubs, walking groups, recreation centers, and local wellness resources.
• Thirty minutes a day keeps the doctor away. Find something you enjoy and do it often. End the stigma of exercise being stressful. Start somewhere and build on it.
• Build neighborhoods and communities where movement is normal. More sidewalks, parks, bike lanes, safe walking routes, and local gyms. Make the healthy choice the easy choice.

Movement becomes medicine when we follow the adaptation.

The rabbit hole with exercise is muscle as infrastructure. Muscle is not just beach tissue. It is a glucose sink, a joint protector, a reserve for illness and aging, and a signal to the body that it still has work to do. Walking improves circulation and blood-sugar handling. Strength training gives bones and tendons a reason to stay strong. Aerobic work trains the heart and mitochondria. The body adapts to the demand placed on it. If the demand is mostly sitting, the adaptation is not freedom.

This is where the system enters the body.

The system around movement has quietly removed movement. Work moved to chairs. Kids sit longer. Neighborhoods are built around cars. Screens replaced play. Gyms can feel intimidating. Recess disappears, then adults wonder why movement feels like punishment. The root problem is not only motivation. It is a world that made stillness the default and then sold exercise back as a separate product.

For families, coaches, schools, and leaders, the takeaway is practical.

Schools, employers, city planners, coaches, physical therapists, gyms, and parents should design movement into the day. More walking, more recess, more strength basics, more safe routes, more playful hobbies, and less shame around starting small. Movement should feel normal before it feels elite.

Bring it back to real life.

The invitation is not to punish yourself into a program you hate. Start with movement you will actually repeat. Walk. Lift something. Stretch. Play a sport. Do a hobby that makes time disappear. Recess should not end just because somebody becomes an adult.

Movement is freedom in physical form. It is the ability to carry groceries, climb stairs, work hard, protect your back, clear your head, and stay useful to the people you love.

The freedom question underneath this topic is simple: What does a free body need from the built environment?

Movement is bodily liberty. The Tenth Amendment and the Constitution's tradition of local responsibility give a useful lens here because sidewalks, recess, parks, zoning, safe routes, school gyms, and local recreation are not abstract. They are freedom infrastructure. A country can talk about liberty all day, but if children cannot safely play and adults cannot reasonably walk, we have designed movement out of daily life.

The practical questions are simple: What can I control today without waiting for permission? What default around me is making this habit harder than it should be? What would make the healthier choice easier for my family or community? What truth do I need to understand before forming a strong opinion?

Resources, and links used

• CDC adult physical activity guidelines: https://www.cdc.gov/physical-activity-basics/guidelines/adults.html
• CDC youth physical activity guidelines: https://www.cdc.gov/physical-activity-education/guidelines/index.html
• CDC recess and school physical activity: https://www.cdc.gov/physical-activity-education/recess/index.html
• American Academy of Pediatrics, The Crucial Role of Recess in School: https://publications.aap.org/pediatrics/article/157/6/e2026077025/207527/The-Crucial-Role-of-Recess-in-School-Policy
• School recess and overweight prevention modeling: https://pmc.ncbi.nlm.nih.gov/articles/PMC9938318/
• Screen media exposure and obesity in children and adolescents: https://pmc.ncbi.nlm.nih.gov/articles/PMC5769928/
• Common Sense Media 2025 census on young children and media use: https://www.commonsensemedia.org/research/the-2025-common-sense-census-media-use-by-kids-zero-to-eight
• Florida statute on physical education and recess: https://www.leg.state.fl.us/statutes/index.cfm?App_mode=Display_Statute&URL=1000-1099%2F1003%2FSections%2F1003.455.html
• CDC physical activity benefits: https://www.cdc.gov/physical-activity-basics/benefits/index.html
• Physical Activity Guidelines for Americans: https://pmc.ncbi.nlm.nih.gov/articles/PMC9582631/
• American Heart Association walking overview: https://www.heart.org/en/healthy-living/exercise-and-physical-activity/walking/why-is-walking-the-most-popular-form-of-exercise
• John J. Ratey, Spark: https://www.johnratey.com/
• Exercise, brain aging, and dementia: https://pubmed.ncbi.nlm.nih.gov/21810472/
• Physical activity and anxiety symptoms: https://pubmed.ncbi.nlm.nih.gov/39952828/
• CDC workplace health promotion model: https://www.cdc.gov/workplace-health-promotion/php/model/index.html
• U.S. Surgeon General workplace mental health and well-being framework: https://www.hhs.gov/surgeongeneral/priorities/workplace-well-being/index.html
• WHO mental health at work: https://www.who.int/news-room/fact-sheets/detail/mental-health-at-work
• Mental health and workplace productivity: https://pmc.ncbi.nlm.nih.gov/articles/PMC4181985/
• Cardiovascular benefits of exercise: https://pmc.ncbi.nlm.nih.gov/articles/PMC3396114/
• Progressive resistance training: https://pmc.ncbi.nlm.nih.gov/articles/PMC9325860/
• Resistance exercise and bone health: https://pmc.ncbi.nlm.nih.gov/articles/PMC6279907/
• Garcia et al., non-occupational physical activity and mortality/cardiovascular/cancer outcomes: https://www.repository.cam.ac.uk/items/fd5b7ca7-8a81-44a0-b0dc-0f25baa6ec06
• Paluch et al., daily steps and all-cause mortality: https://pubmed.ncbi.nlm.nih.gov/35247352/
• Momma et al., muscle-strengthening activity and major non-communicable disease risk: https://pubmed.ncbi.nlm.nih.gov/35228201/
• Diabetes Prevention Program Research Group, lifestyle intervention and metformin: https://www.nejm.org/doi/full/10.1056/NEJMoa012512
• Cochrane review, exercise-based rehabilitation for coronary heart disease: https://www.cochrane.org/evidence/CD001800_exercise-based-rehabilitation-coronary-heart-disease
• Edwards et al., exercise training and resting blood pressure: https://pubmed.ncbi.nlm.nih.gov/37491419/
• Noetel et al., exercise for depression: https://www.bmj.com/content/384/bmj-2023-075847
• Sherrington et al., exercise for preventing falls in older adults: https://pubmed.ncbi.nlm.nih.gov/30703272/
• Moore et al., leisure-time physical activity and risk of 26 cancers: https://jamanetwork.com/journals/jamainternalmedicine/fullarticle/2521826
• Courneya et al., structured exercise after adjuvant chemotherapy for colon cancer: https://pubmed.ncbi.nlm.nih.gov/40450658/