Floor Dumbbell Forearm Supination
In SetGrip: Dumbbell Forearm Supination (Floor)
Flat on your back with elbows pinned at your sides, the floor keeps supination strict: shoulder blades and upper arms simply cannot move. Rotating the dumbbells palm-up from this position keeps all the twist in the forearm. Because the elbow stays fixed at your side, the biceps assist less than they do in the chest-down bench version.
How to do the Floor Dumbbell Forearm Supination
- Lie flat on your back on the floor with your legs extended and your arms by your sides, holding a dumbbell in each hand.
- Rotate your palms to face up, keeping your elbows close to your sides.
- Slowly curl the dumbbells towards your shoulders, squeezing your forearms.
- Pause for a moment at the top, then slowly lower the dumbbells back down to the starting position.
- Repeat for the desired number of repetitions.
Tip: Use high reps, 15 to 25, and a light weight you can move through the full range with control.
Muscles worked
Common mistakes
- Moving the elbow — the forearm should rest on the bench or your thigh and only the hand should turn; if the elbow lifts, you are using the biceps.
- Rushing through the range — go slowly and pause at each end so the small forearm muscles do the work rather than momentum.
- Going too heavy — these movements use small muscles, so a light dumbbell or plate is plenty; the goal is a burn, not a max.
- Bar rolling off the fingertips — on finger curls let it go to the second knuckle and no further, then curl it back into the palm.
Where it fits in a workout
Forearm work goes at the very end of a session after all gripping is done. Superset finger curls with reverse wrist curls.
How many sets, how heavy and how hard: see what the ACSM position stands support.
Variations and alternatives
When to talk to someone
- Chest discomfort, feeling faint or lightheaded, or trouble breathing during or after exercise can be signs of a heart attack. In the US, call 911 right away; elsewhere, call your local emergency number.
- Heart, metabolic or kidney disease, or symptoms like these when you are active: talk to your doctor before you start or step up training.
- Pregnant: ask your obstetric care provider which exercise suits you.
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Sources
- ACSM position stand on exercise quantity and quality (Garber et al., 2011)
- ACSM preparticipation health screening (Riebe et al., 2015)
- ACOG Committee Opinion No. 804 on exercise in pregnancy (2020)
- CDC: About Heart Attack Symptoms, Risk, and Recovery (2024)
Sources checked on October 17, 2026. Full citations are in the exercise library.
Animation and exercise data: ExerciseDB, licensed to SetGrip. General information, not medical or coaching advice.