The Polar F55™ provides you with the ultimate fitness experience. Because cardiovascular exercise, strength training, and relaxation are essential to maximum well being, the Polar F55™ gives the modern fitness enthusiast a complete exercise session by adding new features like Body Workout and OwnRelax. Body Workout, a muscular strength-training guide can be adjusted according to the exerciser's progress, provides basic guidance for strength training. The new OwnRelax feature, checks the body's state of rela