Science says this is actually a good thing to do occasionally. After the first night, I couldn’t sleep. So I actually have recent experience with this. I havent slept in 4-5 days, and by that I don't mean poor sleep, I mean I have NOT slept at all for 4 days. I feel your pain..! I don't know what to do. I've layed in bed for hours. I've tried laying down and going to sleep, but its like trying to go to bed when you're totally wide awake. No big deal. And those changes should help you survive the day. Is this still a problem ?! This may give you a clue as to the reason for your insomnia: * New supplements, medications, foods, beverages? You probably will lose some mental and physiological defense systems. I have been taking Melatonin or Lorazepam and neither seems to work for me. Don’t binge eat after. Although you should avoid going longer than 3-4 days without sleep, you can safely stay up for a few days as long as you plan to get full nights of sleep for 1-2 days afterwards. I'm miserable. I'm not really anxious or stressed. TLDR: Not a whole heck of a lot that you can tell. With multiple deployments under his belt, Kelley has had many instances of … I haven't slept in about 48 hours. I'm tired, but I just cannot get to sleep. If you have been able to sleep well before, the first thing to do is to figure out what may recently have changed. sleep effects the chemistry of the body so a dramatic shift in sleep pattern will produce the effect you describe. It got harder and harder to stay awake, By day three I started hallucinating. I slept but only about 15-20 minutes a day of real sleep. It feels normal, then gets bad, then normal again like nothing happened and in the end it's heavenly, let me walk you through it. I like the answers you received and just have one question. I tried switching on the TV, hoping I'd get sleepy and just doze off. Also you will be hungry. For the first 17-18 hours, you don't really feel much except a little routine tiredness. Some people said I looked like death others just did a double take stare like they saw a zombie. Seriously, though, welcome to the world of quite a few professions during their university years. Scott Kelley, a 10-year Army veteran, knows about sleep deprivation. My body is ready for bed, but my brain is not. Been there myself many times... As for the 'dire consequences' of a lack of sleep, as a medical layman I say to you: don't worry about it excessively. Lots of coffee, loud music, brisk walks, and utter desperation. Does your doctor have you on any type of steroid medication? I once stayed up for four days in grad school to finish some projects. Lasted about 3-4 weeks. X Research source With a little bit of preparation and a regular schedule, you'll be able to stay awake and push through to the end. … after a few years you graduate with a degree in medicine. Exercise will also help you sleep better at night. 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