HOW: Start by standing straight up with a dumbbell in each hand. With your elbows squeezing your side and your shoulder blades back, bend your elbows up towards you with your palms facing down. Lower the dumbbells back down into the starting position and repeat.
FEEL: You should feel your biceps and forearm muscles working.
COMPENSATION: Keep your palms down as you curl up. Don’t lean back as you curl up, stay straight up. Keep your traps relaxed, don’t shrug as you curl.