9 TRX Moves to Sculpt an Insanely Strong Upper Body | Livestrong.com
TRX Pull-Up - This TRX variation of a body-weight training classic will strengthen your arms, shoulders, back and core. HOW TO DO IT: With the handles of the suspension trainer shortened, sit directly under the anchor point with a handle in each hand and your legs in an L position. Pull your chest to your hands while keeping your legs straight and feet planted on the ground. Lower yourself to the ground in one slow and controlled movement and reset when you hit the ground.