There are a whole bunch of things you can do to help you get through exams the best way you can.
Manage your stress
You'll be less stressed if you've got an idea of how the lead-up to your exams is going to look, so plan what you're going to study and when, and stick it up on the wall, or on your desktop. Break it down into manageable chunks and start working through it at the rate you planned. It's probably more boring at the start, but it's far less stressful. Plan some break times and days off too!
Take the pressure off
Deal with pressure and expectations by realistically assessing how you think you'll go, and working to do the best you can. If other people's expectations are pressuring you, talk to them and try to get them to back off. If you're putting too much pressure on yourself, try to realize failure isn't fatal.
Do it together
There are other people studying for the same exam, and they probably don't like having to lock themselves away to study any more than you do. Get together with them and take the books outside from time to time. If you're not as strong in certain areas, it could help to talk to other students as well. If you are good at it, share the brain-wealth.
Go easy on the substances
All of them – caffeine, cigarettes, coffee, no-doz, alcohol, marijuana, and any other drugs. Any drug you think will help you study is actually a short-term fix that'll probably make you feel much worse and cause you to under-perform later.
Get enough sleep, eat good food, and keep moving
It's really important you look after your physical health when studying for exams. Make sure you're stopping to eat regular meals and try to set aside 30 minutes a day to do some exercise, even if it's just going for a walk. Having enough sleep is also really important.
If you're really stressed
If you're finding things tough, ask for help. Talk to your professor, go to the Center for Academic Success, they should be able to help.
If your study load or exams are driving you mad, your campus counselor can help with that as well.
adapted from Reachout.com