Stand Straight next to a doorframe and grab it with your arm.
2. Stick your chest out and unshrug your shoulders.
3. Curl your body towards the doorframe and squeeze your biceps.
4. Hold the contraction for a moment and slowly come back down.
5. Once you’re finished, repeat the steps for the other arm.
Doable at:
Muscle group/groups:
Working muscle/muscles:
