Peter Attia· MD
I can't talk I can grunt that's about it I can grunt and then I am a absolute mess and the amount of you know my average pulse rate during a class is over 150 no no 155 ish sometimes higher sometimes lower and my max is gonna be say 180 you know give or take I know these numbers so high-intensity interval training is important but you got to be careful because if you do too much you're gonna burn muscles