To perform the Zottman concentration curl safely, please follow these steps:
Sit on a bench with your legs spread, a dumbell in the right hand and your upper arm (just above the elbow) resting on the inside of your thigh
Make sure the palm of your right hand is facing the opposite leg
While holding the upper arm stationary, curl the weight while contracting the biceps. Only the right forearm should move. Your wrist should rotate so that your palm faces your shoulder. Continue the movement until your biceps are fully contracted and the dumbell is at shoulder level.
Hold the contracted position for a second as you squeeze the biceps
During the contracted position, rotate your wrist until you now have your palm facing forward with the thumb at a higher position than the little finger
Slowly begin to bring the dumbbell back down using this grip
Repeat steps 2 to 6 until you can no longer maintain the correct technique
Alternatives
Tips
To perform the Zottman concentration curl correctly, here are a few tips to help you:
Avoid swinging the dumbell at any time
Try to keep the rest of the body still while performing this exercise