can swimming laps replace traditional cardio? i just joined a gym that has a pool and i love to swim so I'd like to maximize this opportunity. Any suggestions on how to do this? FYI I'm starting a 12 week body transformation program and i would like to lose as much weight as possible. I feel like swimming laps will give me good cardio and work a lot more muscles then just running on an elliptical or using a stationary bike would.