Stand with your feet shoulder-width apart and hold the band with an underhand grip, palms facing up. Keep your elbows close to your sides and slowly curl one arm up towards your shoulder, squeezing your biceps at the top. Lower the arm back down to the starting position and repeat with the other arm. Continue alternating arms for the desired number of repetitions.
1. Stand with your feet shoulder-width apart and hold the band with an underhand grip, palms facing up.
2. Keep your elbows close to your sides and slowly curl one arm up towards your shoulder, squeezing your biceps at the top.
3. Lower the arm back down to the starting position and repeat with the other arm.
4. Continue alternating arms for the desired number of repetitions.