The WaterRower Rowing Machine ($900-$2,500) is a workout machine that is designed to mimic the dynamics of rowing a boat. The WaterRower Rowing Machine uses WaterFlywheel technology that is designed to give the smooth and fluid feeling that is associated with water. Because rowing is one of the best workouts around for toning almost every muscle in the body, this makes the WaterRower the perfect machine to get a great workout without going to the lake. [source]