The TRX system is a modality of training that uses gravity and your body weight in a way that maximises the improvement of power, bone density, balance, coordination, strength, flexibility, and core (and joint) solidity. Furthermore, it realises this while preventing frequently-occurring injuries with standard methods. The scheme was initially fashioned by a Navy Seal who wanted to be able to sustain high fitness levels in a small area. Soon enough, the device and training system found its way into the colossal fitness trade, and is made use of by more than a few sports teams around the world. There are a couple of reasons why this holds true, mostly dealing with the many advantages it has over unoriginal methods. Firstly, the system is one of the most efficient ways to maximise the amount of strength training possible per unit of time. In essence, you can work the whole body by switching an exercise for one body part to another in a matter of seconds. In a typical fitness environment, a rather extensive quantity of time is spent stacking and unloading a training machine. The TRX system bypasses this. What's more, the design ensures that every exercise engages what is commonly referred to as your ‘core’ (i.e., abdominal area, buttocks, back, and chest). The core is used in virtually every strength-related endeavour you can undertake. Tied to this is the fact that fundamentally every exercise executed is a compound exercise (where more than one joint is moved). What this means is that the strength and muscle growth gains are capitalised on. On that same note, TRX training is a productive tool for ‘plyometric training’, which allows for ideal power-based training (a skill essential to most sports). BibliographySiff, Mel Cunningham, and Yuri Vitalievitch Verkhoshansky. "Circuit Training." Supertraining. 6th - Expanded Version. Denver: Supertraining International, 2009."Suspension Training With TRX - A Total Body Workout | TRX." Suspension Training With TRX - A Total Body Workout | TRX. Web. 30 September 2013. <http://www.trxtraining.com/>.