Biceps Workout Concentration Curl (seated, alternating) • sit on a workout bench & place your elbow on your thigh while holding a dumbbell. Lean forward, keeping your chest upright & curl the dumbbell to your shoulder. Hold it there momentarily while fully contracted. Slowly lower your arm down until it’s fully extended. Repeat on the other arm. #biceps #workout #fitness #motivation #bodybuilding #lifestyle #gym #weightloss #muscle #instagood #goals #training #exercise #gains #personaltrainer #c