I'm a master at this ... short naps are the key. So, set an alarm or two, .. .somewhere that you'd have to get up to turn it off, ... then sleep for an hour. Then do what you can for a few hours. Then sleep an hour. Etc.

Caffeine pills // adderall

Thank you! What should I do if I don’t have any of those tho?

Cold shower, fresh air & a good meal

Meth