Tennis Club anyone? This club is about the oldest club at UC Berkeley. You will find that it has everything to offer that most other tennis clubs have. The compition can be great fun as well as the practice. Want to loss some weight. Well this is a good way as well. I know I lost about 30 pounds while playing tennis one year. You will want to keep plenty of water on hand so as not to get dehydrated. That can cause some severe problems if you do not keep plenty of water.