I've been under stress this whole week because of exams, and what I found that helped was listening to The Killers of Coldplay before the exams started. Especially The Killers. It was either that or the three cups of coffee I drank that morning, but I don't think that could have helped, lol.
Often I'm up late at night stressing about something, so I either watch movies or do yoga to try alleviate the stress. By doing yoga, I mean stretching randomly all over the place in an attempt to a) simulate yoga b) get rid of stress and c) scratch an itchy part of my body, lol.