Stand upright with the resistance band underneath your feet, and your hands holding the handles with your palms facing forward.
Keeping your back neutral and torso upright, exhale as you curl one hand up to your shoulder.
Hold for a count of two. Squeeze your biceps.
Inhale as you lower your hand back to the starting position.
Repeat on the opposite arm. Alternate between arms as you perform the desired number of repetitions.
Comments and tips
The resistance band is similar to the function of free weights (i.e. dumbbells) as it provides resistance against your biceps. With this type of band, the resistance it offers increases the more you stretch it. Moving throughout your range of motion in this exercise causes a variation in resistance, which challenges your muscles, as compared to free weights wherein resistance remains constant. Both can be used to strengthen and build muscle.
Only your forearms should be moving. Keep the rest of your body still.
Do not use momentum or lean back when curling your arm. If this occurs, it means the resistance is too strong for your biceps. Use a band with lower resistance.