What does caffeine do to keep you awake?
952895
personally I think it is just in your head that caffeine wakes you  I myself can drink an entire pot of coffee  with loads of sugar and go right to sleep  and actually in the morning when I leave for work if I get a coffee on the road it actually makes me drowsy I have heard this from lots of people I guess its just people react differently to certain things
682328
DON'T use sugar and caffeine it's bad for you! get regular exercise and you will feel more energy in you all day and then at night when it's time to go to sleep you'll zonk like a lightbulb! exercise is a MUCH healthier alternative for people like us who are in school, I know it's hard to stay awake sometimes but if you get about two hours of exercise everyday, after about two weeks you'll see a tremendous difference! If your body is healthier you'll have lots more energy. Oh and eat healthy, avoid sugar you will not feel so great at first but later you feel better.
41424
I try staying awake to finish term papers a lot.  Keep the lights on so that you don't think of it as night time.  Too much caffine will make you hyper, but just enough will keep your brain stimulated enough to stay awake.  Try sleeping a lot the night before and take a nap that day so you aren't as tired at night.  Try to do all your research before hand so that all you need to do it put it all together.  Do your citations and stuff the next day.  A lot of people say power naps help, but for me if I were to lie down I would stay asleep all night.  Whatever works for you.
289609
Already a lot of good and not so good answers... Don't use alcohol, I did that for years. I don't drink now and sleep better. Stress, is the main thing that keeps me awake now, but only occasionally. Don't smoke either. Feeling secure makes you feel secure in your bed. Do everything to make sure your home is secure obviously. Financial security is important - people do lie awake worrying about money. Emotional security, knowing people care and love you. That's more difficult. But generally speaking you get back what you give out in that department. Obviously avoid stimulants like caffeine in the evenings. When you go to bed tonight. Think about me! A mysterious romantic Englishman - and let your imagination run wild! Even if you don't sleep - it'll make staying awake much more enjoyable. But after a while - maybe 8 hours - you'll get bored with me and nod off! Incidentally, it's 3.05pm in the afternoon now in England. Not the early hours of the morning! I haven't had lunch!
274816
http://en.wikipedia.org/wiki/Caffeine\n\nTry this site.
16322
Check these webpages http://en.wikipedia.org/wiki/Caffeine\nhttp://coffeefaq.com/caffaq.html\nI hope this will help you to find the answer in full.\nBest regards.
470598
The eating thing I don't believe but if you consume caffine to close to bed time it can kick start your adrenaline/energy for a short amount of time causing you not to sleep. \n\nSome times on falling asleep are to make sure you use your bed for only sleep. That way, when you crawl on in at night, your body recognizes that this is the place to sleep, not to read, write, watch tv or play on a laptop. A warm bath can also help you sleep and so can 'white noise' a fan, wind blowing through the window things of that nature...
802527
TEA. Hot, sometimes w/o sugar, sometimes with turbinado sugar. Sometimes room~temperature, when I find a cup sitting around that I have abandoned. I drink tea all day long into the night. It never keeps me up. It never helps wake me up to begin with. All it seems to do is ward off a hella~caffiene~withdrawal headache. I like tea.
52109
There is a study that says that caffeine helps with Parkinson's.  Look at the link for more information.
714915
Caffiene will keep you alert when feeling tired how ever  you will need take more and more to fight the effects of tiredness, and it is also addictive. Another side effect will be a sudden crash if you dont maintian the levels in your body. One minute you will be awake and alert the next you will find that you have no energy and feel reallly tired. You should be aware that by working long hours at full alertness is detremental to you health over long periods of time. It disturbs your sleep pattern and causes you to become less alert. \n\nThere is also the practical issue of determining the level of fatigue at which performance poses a real risk. How do we set standards for fatigue? How much fatigue is too much? We recently compared the effects of sleep deprivation and alcohol intoxication and found that after 17-19 hours without sleep, starting from waking at about 0600 hours, individuals' performance was equivalent to or worse than at 0.05% blood alcohol concentration.15 In other words, commonly experienced levels of sleep deprivation—one extended day for a well rested individual—had a profound effect on performance. At around 2230-2430, well before reaching the circadian trough in alertness, performance levels were low enough to be considered incompatible with safe driving in many countries.\n\nThats an extract from the link below. I hope you work it worth the cost to you and your health.
624537
What Coffee Can Do:\n\nImproves mental performance. \nBoosts physical energy. \nElevates and improves mood. \n \n\nResearchers at MIT found that "caffeine is \na mind-accelerating mood booster." \nIt increases mental performance. \nCaffeine stimulates reaction time, attention span, \nconcentration and acuity with numbers. As little \nas 32 mg of caffeine as much as in a single serving \nof cola or a 5-ounce cup of tea can give you a real \nmental and energy boost. \nCaffeine moves to your brain fast, with 20 to 30 \nminutes and lasts up to 6 hours. \n \n\nCaffeine also improves physical endurance. Studies \nshow that cyclists pedaled 7% harder and lasted \nin competition 20% longer after taking caffeine. \n\nTip\n\nDrink your caffeine before your meal for a bigger \nenergy boost and fatigue beater effect.
301669
Caffeine is like everything else in this world, use the golden rule "Everything in moderation." Caffeine is a drug. In limited doses, it will do you no harm, but in larger doses you can become addicted.
980561
Histamine is a hormone that increases wakefulness. So much so, one is unable to stay awake in absence of histamine.\n\nI know this, because I have being an allergy sufferer all my life and have done a little documental research. Histamine is involved in allergic reactions. And unfortunately am very familiarized with the unpleasent fluctuation of histamine levels produced by the anti-histamines I've taken.\n\nBut, as I understand, it is not sold as a estimulant \n\nThe only substance I know, that is used in over-the-counter medications is CAFFEINE.
507796
erm..usually i take loads of caffeine before i hit the books..but that's bad advice..another alternative is taking a bath..you'll feel fresh, clean and definately awake!!!
323186
Exercise.. While your exercisingand after you'll have none but it will built up. It keeps you awake.
45085
The best way to stay awake during a 8 to 10 hour shift is busting your @ss....Sure caffiene will work for a short period of time, sure No-Doze will work for a little longer of time than caffiene but keeping your body going at a rthym will adjust your mind and set it to do as much as it can possibly handle.Take it from me I am a Grocery Store Manager of two stores and work shifts of 15 hours during inventory and around the holidays.I have been doing these long shifts for 14 years to this present day... Good luck and try to get some rest if you can....
802065
Lie down and close your eyes you don't realize it but your body is getting more sleep than you perceive. You can be in stage one sleep and be fully aware of your surroundings. Unless you had caffeine or any other stimulants they cause insomnia.