The new Pottruck Center offers 19,000 square feet of exercise equipment including a juice bar, a three story climbing wall, classes, a pool and sauna, and all the exercise equipment you can desire. The major disadvantage is that membership is limited to people associated with UPenn. Also, the weight room tends to be heavily populated by men so can be intimidating for women wantinng to work out there. Parking can also be difficult. However, if you are a UPenn student, membership is about $20/month for some of the best facilities in the city.