Natalie Coughlin Swim Workouts with the "iTrainH2O" player

Here is Natalie Coughlin delivering a workout via the iTrain H2o player. The actual workout itself is an hour long and this You Tube is just a two minute video. If you own the iTrain H2o player, you can download her workouts at iTrain.com

Note how strong and relaxed Coughlin's kick is; so much power with so little effort. Also, note the "S-curve" on her backstroke pull; very symmetrical.