So now having done one, two, three, maybe four or five of these shorter fasts. They're definitely easier and that's saying even though the longer it's you get more and more used to them. You have periods during those longer fasts where you're at least for me. I'm just sort of dragging. I'm kind of wearing it. I'm just not my normal self for the three day fast sites seem to skate through them a little bit easier. That's one thing. I think the other thing is my exercise tolerance seems higher because obviously I'm not subjected to the same degree of glycogen depletion. So, For example, not the today's workout counts because it was actually the first day after having a dinner. So this doesn't really have fasted work out but I suspect I could do the type of work that I did today, which was two hours and super intense. Lots of sled work lots of deadlifts lots of compound movements. I could do that easily through a three day. Whereas in the longer fast. I still try to do those activities each day, but I really have to reduce the volume and I just find that during the three day fast. Nothing really seems to happen.
Peter Attia's Exercise Tolerance Is Higher During Shorter Fasts
AMA #13: 3-day fasting, exogenous ketones, autophagy, and exercise for longevity - Peter Attia