VO2 max is the single most important predictor of longevity.
— SammyArmstrong (@SammyRArmstrong) June 14, 2025
And the best way to maximise it?
A 25-minute workout that can make your heart 20 YEARS younger!
(The 4×4 Norwegian protocol) 🧵 pic.twitter.com/kMmzSdpnxd
Terrifying for sure
https://twitter.com/MaryBowdenMD/status/2067416136631668967