I never understand how after a hard roll people show interest in still doing it the following day. There is no way I'd have a good time and the recovery would be awful. I only ever roll when I know I have a couple of days off from work after the night of the session. Same goes for tripping. I like to space it all out very evenly and then have 2 days to recover before I head back to work.
It takes me a week to get over the epicness of a great roll any way, there is never any drive to do more because I still have to digest what I went through and integrate back into reality and take what I can from the roll or trip back with me.