Known as the Dumbbell Seated Alternate Hammer Curl On Exercise Ball, this is a curl variation using a dumbbell, performed seated. A biceps isolation move that curls a dumbbell up and down through a controlled elbow hinge. It's commonly used to correct strength imbalances between the left and right side.
Log your dumbbell seated alternate hammer curl on exercise ball sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.