HOW: Start in a standing position with a band anchored under your feet, hold the band in each hand with your thumbs facing up and palms facing in. Begin the exercise by keeping the rest of your body still, arms hugged against your sides, and bending your elbows to perform a hammer curl. Slowly lower down to starting position and repeat.
FEEL: This should feel like an upper body workout, specifically your biceps and forearm muscles. You should feel your shoulder blades working as well to maintain upper body position keeping your chest up and shoulders back.
COMPENSATION: Keep the rest of your body still, do not excessively arch or bend your back. Do not use momentum to bend your elbows. Do not excessively shrug.