How to Tone your back with the TRX suspension training
Adding resistence in the form of weights to your workout is the best way to increase the difficulty of the exercise. This forces your muslces to work harder and makes you burn more fat (which is always a good thing).
Watch this video to see how Coach Nick Tumminello does his 15/30 back workout protocol using TRX Suspension Training. Suspension cords add resistance to the rowing-inspired movement.