I think that depends a bit on personality, place/time in life, etc.
I could easily pull those hours in my early 20s,etc but nowadays I have family and other things so if I do those hours I'll be behind with other things so in addition to needing a bit of extra rest as I'm older, I'll also be in a "todo-deficit" that needs to be caught up with making for more stress in the near/middle term.
I could easily pull those hours in my early 20s,etc but nowadays I have family and other things so if I do those hours I'll be behind with other things so in addition to needing a bit of extra rest as I'm older, I'll also be in a "todo-deficit" that needs to be caught up with making for more stress in the near/middle term.