"I am running a successful free-lance personal training business in Chelsea, London and weight loss/holistic retreats in Europe. The TRX is the first portable and complete exercise system I have ever come across. It is a truly functional training tool. Your body is worked in all three planes of motion, your stabilizers and core are always switched on and strengthened and all movement patterns are used. The exercises range from static/isometric posture exercises to dynamic power moves for the more advanced athlete.