When we were at El Senador we just went to the gym for a workout every other day and we played a few games of tennis. They have a games room with ping pong tables and other table sports. At the beach you can take out paddle boats or play beach volleyball. At one of the large pools they also organize water sports or water arobics. The have also organized an ocassional soccer game or you can just bike around the island to explore. I also saw people fishing. All this is included in the All Inclusive Package. If you want to pay extra you can take trips to the mainland and enjoy speedboating and snorkeling and perhaps many other sports. Or on the island you can pay extra and enjoy hang-gliding or horseback riding.