Exercise Advice: Sit at the end of a flat bench
with your feet flat on the floor and your back upright and straight.
Grab a dumbbell in each hand and let them hang at your sides with
both palms facing inward toward the bench. Simultaneously curl the
dumbbells up while twisting (i.e., supinating) your wrists outward
on the way up. Be sure to squeeze your biceps at the top for a one-count
and then slowly return to the start position and repeat.