Be well fed, I'd maintain a routine of smaller meals light in carbs to avoid lethargy. Get some sort of exercise in (do a set of burpees or something). Be min

Be well fed, I'd maintain a routine of smaller meals light in carbs to avoid lethargy. Get some sort of exercise in (do a set of burpees or something). Be mindful of eye strain. If you're having trouble falling asleep immediately after working, f.lux and melatonin are your friends. And probably most important, figure out what mistakes caused you to be stuck working 15 hours a day and learn to avoid it in the future.