After a fitness epiphany a few months ago, I decided to build a manageable workout plan for myself. Drawing inspiration from Mark Sisson’s “The Primal Blueprint,” I focus on four types of weekly activity:
- MOVE
- LIFT
- SPRINT
- PLAY
Moving your body regularly is essential, but many people assume they must do intense cardio to see benefits. From my experience, sustained, gentle movement provides tremendous health advantages without the drawbacks of excessive high-intensity exercise. Below I explain what “moving” means, why it matters, and how to do it sensibly.
My father, a medical doctor, used to say walking makes you “leave fat in your footsteps.” That image reminds me that activities like walking, hiking or yoga—steady, low-intensity aerobic efforts—are extremely valuable. The target heart-rate zone for this type of activity is roughly 55–75% of your maximum heart rate. Regularly moving at this pace supports cardiovascular and immune health, helps build a base of strength, and prepares you to handle tougher workouts when you choose to.
Benefits of low-key aerobic activity include:
- Balancing blood sugar levels
- Regulating appetite
- Training the body to burn fat more efficiently
- Expanding the capillary network
- Increasing muscle mitochondria
- Improving stroke volume of the heart
- Enhancing lung oxygen delivery
- Strengthening bones, joints and connective tissue
- Aiding recovery from intense workouts
- Stimulating beneficial hormone flow
- Making the circulatory system more efficient
- Raising overall energy levels
Hitting 55–75% of maximum heart rate is easier than many people think and depends on current fitness. A fit person might jog to reach this zone; someone less fit may only need a brisk walk. Heart-rate calculators can estimate your target zone by age, but a practical rule is that you should be lightly sweating and still able to hold a conversation. If you want precision, use a gym monitor or an inexpensive wearable to track your heart rate and avoid exceeding this range on movement days. A common rough estimate for maximum heart rate is:
- 220 − age = estimated maximum heart rate (men)
- 226 − age = estimated maximum heart rate (women)
When you MOVE within this range, your body favors fat as fuel. By contrast, sustained exercise above about 85% of maximum pushes your body into glucose burning, leading to lactate buildup and higher cortisol. Long stretches of high-intensity cardio—what some call “chronic cardio”—can cause problems such as:
- Metabolic and stress-management issues
- Weakened immune function
- A shift from fat to glucose as the preferred fuel
- Increased cravings for carbohydrates and overeating
Excess cortisol from overly intense, prolonged exercise can cause further harm, including:
- Muscle breakdown
- Suppressed anabolic hormones (testosterone, growth hormone)
- Fatigue and burnout
- Immune suppression
- Loss of bone density
- Reduced fat metabolism
- Greater systemic inflammation and oxidative damage
- Faster biological aging
In short, optimal health does not require hours of high-intensity cardio. Once I realized that frequent, gentle movement is not only sufficient but highly beneficial, exercising felt less like a punishment and more like a sustainable habit. I still do higher-intensity workouts by choice, but now they are driven by enjoyment and energy, not by the belief that endless hard cardio is the only way to be fit.
Right now, my MOVING routine is mostly walking and hiking during the summer. When winter arrives I’ll likely do more yoga or indoor movement; even chores like shoveling can count as MOVING, SPRINTING or LIFTING, depending on intensity. I aim for a minimum of about two hours of low-intensity movement per week but often do more, adjusting based on energy, weather and available time. Sometimes one long family hike provides the bulk of that weekly movement.
Exercising outdoors also offers a chance to connect with nature and enjoy the beauty around us, which I find restorative. Moving outside this summer has been a great way to share activity with my children and encourage them to appreciate exercise and the outdoors. Their complaints about sore legs have diminished, and I hope the habit of regular physical activity sticks with them for life.
