Stock up on invigorating drinks for the period from 3 am to 5 am, or exercise, m * sturbation. Even after lunch, the critical time for wakefulness, the same principle.
Advice from an HSE student :)
In fact, a day is not so much. Most of the problems arise when the lack of sleep falls on the second day. This is important to understand.
So, item number once. Fresh air. Nothing is so invigorating when the room is cold. It is best to dress warmly, but keep the overall temperature lower than usual.
Short breaks. This is a direct salvation, especially if you know how to sleep in polyphasic. The optimal strategy is as follows - drink coffee / green tea, go to bed for 20 minutes. (Choose the time yourself, with whom how. 20 minutes is best for me, 15 of which I sleep, I take 5 to just lie down, realize who I am and where ). During these same 20 minutes, caffeine is absorbed and when you wake up, you will be cheerful and cheerful. For fun - super cheerful music helps. Paradoxically, the Lezginka helps me the best. This has already become a reason for constant jokes among friends, but the fact remains that cheerful motives turn the heart on and you want to sleep less.
Exercise also helps a lot, such as squats, push-ups, or something active. Again, due to the fact that the heart rate increases.
About food. It is better not to overeat too much, because from a well-fed state you want to sleep. I usually eat pistachios, seeds. Clean energy. Well, tea, coffee, energy drinks.
Try not to be in the dark, melatonin is produced and you want to sleep. Do not do something monotonous and tedious, at worst take breaks, because concentration is lost.
That's all, brace yourself and try to sleep after such a marathon.