Dumbbell Seated Double Concentration Curl

Instructions

1. Sit on a bench with feet wide apart, holding a dumbbell in each hand with elbows braced against inner thighs.
2. Simultaneously curl both dumbbells up toward your shoulders, keeping your upper arms stationary.
3. Squeeze the biceps at the top, then lower with control back to the start.
4. Repeat for the desired number of reps.