One thing I learned while studying for finals is to not study where you sleep, so don't study while laying in bed or on a couch you take naps on. I say try to find an area where you can feel free to move about and talk to yourself.

An important thing to do while studying is if you reach a point where you feel like you can't read another word, just take a break. Watch a show, take a walk, or even surf the net. Then come back to studying.

If you have a public speaking or monologue for acting due, one thing to try is tossing a ball back and forth with someone as you recite it. It helps you stay loose and get you out of your head and focus on talking.

Always stay hydrated while studying and I find I do my best if study for a while, take a break, and then switch back to studying.