Peter Attia· MD
24 sessions of high-intensity interval training where it was like a 45-minute sessions five minute warm-up 5-minute cooldown and then you know in between the max intervals which were like pretty long like a minute there was you know the 70% of max water anyway so 24 of those increased vo2 max by 12% so you're literally taking an entire decade of decline and like reversing it with the 24