10-Minute Arm and Shoulder Workout With Class FitSugar This workout is led by Class FitSugar host Anna Renderer and features moves like single-leg Scarecrow, push-up and rotate, triceps kickbacks, and horizontal bicep curls (which involve going into a split lunge, so you feel it in your legs, too). Grab some light- to medium-weight dumbbells and get to it!