Absolutely. When I was in the Navy, working 80-100hrs/wk, we were served four meals a day, every six hours, like clockwork. You can substitute sleep with calori

Absolutely. When I was in the Navy, working 80-100hrs/wk, we were served four meals a day, every six hours, like clockwork. You can substitute sleep with calories for days or weeks at a time. It's terrible for you, I do not recommend it, but it can keep you going.