Step 1: Anchor the TRX effectively, adjust the straps to mid-calf length.
Step 2: Begin in a suspended forearm plank position, elbows directly underneath your shoulders, hands flat, firmly pressing into the ground, feet in the TRX loops, toes facing down.
Step 3: Engaging your core, rock forward about two to three inches so that your shoulders are slightly in front of your elbows. (ensure the body stays straight; don’t drop the hips).
Step 4: Then, slide back so that your shoulders are about two to three inches behind your elbows.
Step 5: Draw your knees towards your chest, keeping your hips level.
Step 6: Straighten your legs back out into a plank position.
Step 7: Repeat.
How to progress the exercise
Increase difficulty by leaning on a Bosu with your elbows to increase instability and work your core even harder.
Tip: If you fatigue too quickly on this exercise remove the crunch and just perform a standard TRX body saw.