I actually have no problem staying up for 2 days straight. It's the NEXT day that I'm useless, so I don't do it often. I don't partake in caffeine beyond an o

I actually have no problem staying up for 2 days straight. It's the NEXT day that I'm useless, so I don't do it often. I don't partake in caffeine beyond an occasional cup of tea. My body just seems fine with anything up to about 2 days of being awake.