text: how to concentrate for long hours during exam days? [ suggestions to keep ur brain active]? any suggestions!!! do the following: 1) break up exam study sessions into chunks less than 2 hours each.   2) study one topic at a time and make yourself a good schedule and stick to it. 3) between sessions, take a 10-15 minute break to relax or do something you like. 4) make sure you get 8 hours of sleep a night and take sleep aids if you have to 5) avoid stimulants like coffee and cigarettes.  instead, eat healthy things like herbs, fruits, and fiber.  they will give your body real mental and physical power.  also do a bit of exercise.  it may seem like taking care of your body is the last thing you have time for, but i promise it will reenergize you and help you study and remember better.