The 2 Workouts That Protect Your Brain, Muscles, and Metabolism

What if one of the most powerful anti-aging tools wasn't a supplement, medication, or expensive biohack—but the way you exercise? While many people think of exercise as a way to lose weight or burn calories, its greatest benefits happen deep inside your cells.

In today's episode, I discuss:

• The two most effective forms of exercise for healthy aging and longevity
• What happens inside your cells when you challenge your muscles and cardiovascular system
• The often-overlooked factor that can determine whether you stay strong and independent as you age
• The minimum amount of exercise needed to support your muscles, metabolism, heart, and brain
• How and why you should measure your VO2 max

Healthy aging isn't about finding the latest longevity hack—it's about consistently giving your body the signals it needs to adapt, grow stronger, and stay resilient.

Resources Mentioned:

• Track your metabolic health with Function Health: https://functionhealth.com/mark (Use code MARK2026 for $50 off your membership.)
• Have a question you’d love answered on Office Hours? Submit it here

(0:00) The role of exercise, types of exercise, and debunking strength training and HIIT myths

(2:05) Mitochondria, aging, and chronic disease

(4:24) Movement, mitochondrial health, and essential types of movement for longevity

(5:54) Prioritizing strength training and muscle as a longevity organ after age 40

(8:17) Building a resilient immune system

(10:27) HIIT, VO2 max, and interval training routines

(13:24) Combining strength training and HIIT; starting from scratch and common questions

(15:17) Movement as medicine and closing remarks