Performing the: A Step-by-Step Tutorial Dumbbell Preacher Curl over Exercise Ball
Kneel down behind the exercise ball, then lean forward to rest your upper arm on the ball, ensuring your elbow is slightly hanging off the edge.
Pick up the dumbbell with your free hand, keeping your palm facing upwards.
Slowly curl the dumbbell towards your shoulder, keeping your upper arm stationary and using only your forearm to lift the weight.
Lower the dumbbell back to the starting position in a controlled manner, ensuring to fully extend your arm, and repeat the process for your desired number of reps before switching to the other arm.