how to improve your vo2 max (so you can live longer)

27 Aug 2026 · 2 min

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1:36

In this short fitness segment, Eric Roberts explains that VO2 max—the maximum amount of oxygen the body can take in and deliver to muscles—is the strongest predictor of lifespan among common health metrics. He defines VO2 max as a “gas tank” for the body: a larger VO2 max lets you work longer without fatigue, while a low VO2 max makes simple activities feel breathless. Roberts then outlines a three‑pronged training plan to boost VO2 max: (1) 2–4 low‑intensity cardio sessions per week (30–60 min, nose‑breathing intensity) such as walking, cycling, or elliptical; (2) 1–2 high‑intensity interval cardio sessions per week (4 min hard, 3 min rest, repeat ~4 times); and (3) 2–4 strength‑training sessions per week (5–12 reps, heavy load, near failure). He claims measurable improvements within 4–8 weeks, including reduced breathlessness, higher daily energy, fat loss, muscle gain, and a lower resting heart rate. He invites viewers to comment with questions and follow for more simple fitness advice.

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Your VO2 max is more strongly correlated with your lifespan than any other metric I can generate about you. Okay, but what the hell is your VO2 max? It's the amount of oxygen your body can intake and deliver to your muscles during exercise. Think of it like a gas tank. The bigger your gas tank is, the more your body can work without getting fatigued, And the smaller your gas tank is, you get out of breath walking upstairs. How can you improve your VO2 max? First, you can do 2 to 4 cardio sessions per week at a low intensity, 30 to 60 minutes of an intensity where you can still breathe through your nose. And this could be incline treadmill walking, the bike, elliptical, whatever you want. Second is 1 to 2 hard cardio sessions per week at a higher intensity where you go hard for 4 minutes, rest for 3 minutes, and repeat that 4 times. And number 3, 2 to 4 strength training sessions per week, 5 to 12 reps, lifting heavy, pushing yourself close to failure. And in just 4 to 8 weeks, you'll notice You're out of breath less, more energy during your day, losing fat and building muscle, and a lower resting heart rate. If you have questions, drop them in the comments and follow for more simple fitness advice.