How to do it
Keep your wrists in a neutral, unbent position throughout the curl.
- 1
Lie on your back with your knees bent and feet flat on the floor.
- 2
Hold a towel with both hands, shoulder-width apart, and extend your arms straight up towards the ceiling.
- 3
Keeping your upper arms still, bend your elbows to lower the towel towards your forehead.
- 4
Contract your biceps to curl the towel back up to the starting position.
- 5
Repeat for the desired number of repetitions.
Expert tip
Focus on isolating the biceps by keeping your elbows stationary and only moving your forearms during the curl.
Common mistakes
- ✕Lowering the towel too fast toward the face
- ✕Over-gripping the towel during each curl
- ✕Arching the lower back off the floor