When my physical recovery following the day after vigorous physical activity started bouncing back less and less. Used to be able to do whatever on any given day, and strenuous activities many days in a row, but now I have to schedule it and space it out to prevent feeling like I'm on a death march 'the day after'.
That, and I also noticed it when my overall energy level headed south. The energy level I had in my early 20s at 1am (after partying for hours) is on par with where I'm at now in the mornings after breakfast and before actually doing anything... and over the course of the day it's all downhill from there. That high daily energy is what I miss the most.
When my physical recovery following the day after vigorous physical activity started bouncing back less and less. Used to be able to do whatever on any given day, and strenuous activities many days in a row, but now I have to schedule it and space it out to prevent feeling like I'm on a death march 'the day after'.
That, and I also noticed it when my overall energy level headed south. The energy level I had in my early 20s at 1am (after partying for hours) is on par with where I'm at now in the mornings after breakfast and before actually doing anything... and over the course of the day it's all downhill from there. That high daily energy is what I miss the most.