HOW: Start by holding the TRX bands out in front of you. Lean forward into the TRX with your arms and core engaged. Keep a slight band in your elbow. Slowly raise both arms up overhead until you get to a straight line with your arms and body - ideally, if you are not able to make it this far out that is fine! Pull yourself back up. The further your stand from the TRX anchor the easier the exercise will be.
FEEL: You should feel your core and shoulder muscles working.
COMPENSATION: Keep your back flat and your knees straight.