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What if building muscle isn't just about looking better—but about living longer, staying independent, and maintaining your health as you age?

In this episode of the Fit Rx Health & Wellness Podcast, Dr. Greg Dennis continues the 7 Pillars of Optimal Health series with Pillar #3: Movement & Strength.

Exercise has been a major part of Dr. Dennis's life for more than 30 years, but the reasons for exercising have changed. What may start as a desire to build muscle or improve appearance becomes something much more important as we age: preserving strength, metabolic health, mobility, and the ability to keep doing the things we love.

In this episode, Dr. Dennis discusses:

• Why skeletal muscle can be thought of as an organ of longevity
• The powerful relationship between physical fitness and lifespan
• How muscle helps regulate blood sugar and improve insulin sensitivity
• Why maintaining muscle becomes increasingly important as we age
• The connection between strength training, bone health, mobility, and independence
• Why simply walking is important—but isn't a complete exercise program
• How often you should strength train
• What progressive overload means and why it matters
• Why cardiovascular fitness is just as important as strength
• What Zone 2 cardio is and how to incorporate it
• What VO₂ max measures and why it's such an important marker of longevity
• How high-intensity intervals such as the Norwegian 4x4 can improve aerobic fitness
• How to balance strength training, Zone 2 cardio, and VO₂-max training
• Dr. Dennis's own weekly exercise routine and how he approaches training for both muscle and longevity

You don't have to become a bodybuilder or an endurance athlete to benefit from exercise. The goal is to move every day, build and preserve muscle, and develop the cardiovascular fitness necessary to remain capable throughout life.

Muscle isn't just about appearance. Muscle is freedom. It helps preserve your ability to work, travel, climb stairs, carry groceries, play with your children or grandchildren, recover from illness, and maintain independence as you age.

Don't just exercise to weigh less. Train for the life you want to be capable of living.

This is the third episode in the 7 Pillars of Optimal Health series from the Fit Rx Health & Wellness Podcast.

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Keto. Carnivore. Vegan. Mediterranean. Low-carb. Low-fat. With so many competing opinions about nutrition, eating for health and longevity has become unnecessarily complicated.

In this episode of the Fit Rx Health & Wellness Podcast, Dr. Greg Dennis continues the 7 Pillars of Optimal Health series with Pillar #2: Nutrition.

After years of studying nutrition, longevity, and metabolic health—and seeing what works in clinical practice—Dr. Dennis shares how his own thinking about nutrition has evolved. Rather than following a diet with a particular name, he believes the foundation of good nutrition can be surprisingly simple: prioritize protein, eat mostly real whole foods, maintain a healthy body composition, and individualize carbohydrate and fat intake based on your metabolic health, activity level, and goals.

In this episode, you'll learn:

• Why calories still matter
• Why protein becomes increasingly important as we age
• The connection between muscle, metabolic health, and longevity
• Whether red meat belongs in a healthy diet
• Why healthy fats are beneficial—but aren't unlimited
• Why carbohydrates aren't necessarily the enemy
• The difference between whole-food carbohydrates and highly processed foods
• When low-carb and ketogenic diets may be useful therapeutic tools
• The pros and limitations of vegan, vegetarian, and carnivore diets
• Why ultra-processed foods may be a much bigger problem than any single macronutrient
• What Dr. Dennis actually eats and how his own approach to nutrition has changed over the years

The takeaway is simple: your diet doesn't need a name.

For most people, building meals around quality protein and minimally processed whole foods—while limiting the highly processed foods that dominate the modern diet—is a sustainable foundation for metabolic health, maintaining muscle, healthy aging, and longevity.

This is the second episode in the 7 Pillars of Optimal Health series. Follow the Fit Rx Health & Wellness Podcast as we explore Sleep, Nutrition, Movement & Strength, Hormonal Health, Emotional Health, Relational Health, and Spiritual Health.

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What if improving your health isn't about finding the perfect diet, supplement, medication, or exercise program—but about strengthening the foundations that everything else is built upon?

In this episode of the Fit Rx Health & Wellness Podcast, Dr. Greg Dennis introduces the 7 Pillars of Optimal Health: Sleep, Nutrition, Movement & Strength, Hormonal Health, Emotional Health, Relational Health, and Spiritual Health.

We begin the series with one of the most important—and most overlooked—pillars: sleep.

Sleep plays a critical role in hormone balance, metabolism, weight management, muscle recovery, brain function, emotional health, and longevity. Yet many people struggle with poor sleep while focusing on supplements or medications before addressing the fundamentals.

In this episode, Dr. Dennis discusses practical ways to improve sleep, including:

• Creating a consistent sleep schedule
• Using morning sunlight to support your circadian rhythm
• Optimizing your nighttime routine and sleep environment
• How caffeine and alcohol affect sleep quality
• The relationship between exercise, stress, and sleep
• Supplements such as magnesium, melatonin, glycine, L-theanine, and apigenin
• When poor sleep may point to an underlying issue such as sleep apnea, hormonal changes, chronic stress, or metabolic problems

You'll also get a simple approach you can begin using tonight to start improving your sleep.

This is the first episode in the 7 Pillars of Optimal Health series from Fit Rx Health & Wellness. Over the coming episodes, we'll explore each pillar and how they work together to improve health, performance, and longevity.

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