TRX, also called suspension training,  is a cutting-edge training method that works the entire body in a single workout.  The system was developed in 2005 by a Navy SEAL and is essentially a web of ropes where the means of resistance is the user's own body weight.  TRX, if used correctly, can build strength, flexibility, balance, joint stability, and core stability.  Because TRX works the entire body at once, it can be an effective method of weight loss, while at the same time reducing the trainee's chance of injury.  It's one heck of a workout!