I have a membership for the University Gym. It is quite a lot of money, but definitely worth it. The facilities in the gym are top of the range, and it is huge; there are two floors! The membership also means you can go to any of the classes for free and you also get access to the pool. I have a two hour break on a Tuesday where I go to the gym. They have showers in the changing room so I can go back to university afterwards.