Performing the: A Step-by-Step Tutorial Dumbbell Preacher Curl
Hold a dumbbell in each hand, palms facing upward, and rest your arms on the preacher bench with the backs of your upper arms flush against the padding.
Slowly curl the dumbbells upwards, keeping your upper arms stationary and using only your forearms to lift the weights.
Pause at the top of the movement, squeezing your biceps for a moment before slowly lowering the dumbbells back to the starting position.
Repeat the movement for the desired number of repetitions, making sure to maintain good form throughout the exercise.