Originally Posted by Mediocrefunkybeat
Nobody has mentioned Yoga! Not something I practice (I wish I had time with coursework deadlines approaching and stress going through the roof) but if you're feeling stiff then I suggest that it will be of great help and mentally calm you as well.
Of all the suggestions above, swimming is the one I would agree with the most, although none of them are bad!
my sister did a bit of yoga while at uni.