Quick Hit | The VO2 Max Myth Social Media Won’t Tell You About

Two vehicles. Same destination. One question: which one will you actually do?If you’ve spent any time on health and fitness social media in the last two years, you’d be forgiven for thinking the only acceptable way to train your VO2 max is to strap on a weighted vest and grind out an hour of Zone 2 cardio every day. That’s what the algorithm is selling. The data tells a very different — and far more forgiving — story.In this Quick Hit, Dr Cois walks through the two evidence backed vehicles for building cardiorespiratory fitness in the average adult: Zone 2 cardio and interval training. Both work. Each has a place. And the choice between them is far more practical than philosophical.You’ll get the conversation test for finding your Zone 2 without a heart rate monitor, a 4-week interval progression that reliably moves the VO2 max needle by 5–10 points, the under prescribed half of the exercise guideline almost nobody is doing, and the simplest predictor of whether you’ll still be exercising a year from now.Plus: a heads-up on what’s coming next — Overheard Journal Club.Key Takeaways•  VO2 max is one of the strongest predictors of long-term health we have• Roughly half of US adults don’t meet even the aerobic activity guideline• Zone 2 is a way, not the way — and it has one underrated strength• Intervals are extraordinarily time-efficient and free up space for strength training• Adherence beats optimisation — the vehicle you’ll actually do is the one that winsDisclaimerEducational content only. Not medical advice. If you are starting a new exercise program, have known cardiovascular disease, or have symptoms with exertion, consult a qualified clinician before beginning.