Dumbbell Lying Supine Biceps Curl

biceps upper arms dumbbell

Learn how to do the Dumbbell Lying Supine Biceps Curl with proper form and technique. This dumbbell exercise primarily targets your Biceps, with secondary emphasis on Forearms.

Dumbbell Lying Supine Biceps Curl exercise demonstration showing proper form

How to Do the Dumbbell Lying Supine Biceps Curl

Follow these steps to perform the Dumbbell Lying Supine Biceps Curl with correct form:

1Lie flat on a bench with your back and head supported, and your feet flat on the ground.
2Hold a dumbbell in each hand with your palms facing up and your arms fully extended.
3Keeping your upper arms stationary, exhale and curl the weights while contracting your biceps.
4Continue to raise the weights until your biceps are fully contracted and the dumbbells are at shoulder level.
5Hold the contracted position for a brief pause as you squeeze your biceps.
6Inhale and slowly begin to lower the dumbbells back to the starting position.
7Repeat for the desired number of repetitions.

Dumbbell Lying Supine Biceps Curl Muscles Worked

Primary

biceps

Secondary

forearms

Exercise Details

Equipment: dumbbell
Body Part: upper arms
Category: Extended

Muscles & Anatomy

The lying supine biceps curl is performed flat on a bench, face up, with arms hanging off the sides of the bench and dumbbells curled from a full hang. The flat, horizontal body position is the key differentiator: it eliminates all possibility of torso swing, shoulder elevation, or any body momentum to assist the curl. The arms hang straight down from the shoulders at the sides of the bench, creating a unique starting position where gravity provides maximum resistance directly against the biceps at every point in the range of motion. The horizontal arm position also means the shoulder joint is in a slight extension at the bottom, which provides a mild additional stretch on the long head of the biceps similar to the incline curl. This makes the lying supine curl one of the strictest and most challenging biceps variations available.

Pro Tips for Better Results

1Allow the arms to hang completely vertically downward at the start of each rep — don't pre-curl before the set begins. The full arm hang creates maximum biceps tension at the bottom, which is the primary advantage of this variation. Starting from a partially curled position defeats the purpose entirely.
2Keep the upper arms stationary throughout the rep. Because you're lying down, there is no temptation to use the torso — but some people compensate by letting the upper arm swing forward and upward to assist the curl. The upper arm should point straight toward the floor for the entire movement. Only the forearm moves.
3Use a bench that is narrow enough for the arms to hang freely. A wide bench prevents the arms from hanging vertically and forces them to angle outward, changing the resistance angle. Use a standard workout bench and let the arms hang naturally outside the bench edges.

Common Mistakes to Avoid

✗ Upper arms lifting off the sides of the bench or swinging forward

Fix: Forward upper arm movement introduces shoulder flexion and reduces the biceps isolation. Actively press the backs of the upper arms against the bench edges or hold them stationary. If the upper arms are moving, the shoulder girdle is contributing — which defeats the entire purpose of the lying position.

✗ Not completing the full range of motion at the bottom

Fix: Some trainees feel an uncomfortable stretch in the biceps at full arm hang and truncate the bottom range. This discomfort is the muscle being placed in maximal stretch — exactly the stimulus that produces superior hypertrophy compared to partial range curls. Work into the bottom range progressively with lighter weights.

✗ Curling both arms simultaneously and allowing the stronger arm to lead

Fix: When both arms curl simultaneously in the lying position, the dominant arm typically leads in speed and range of motion. Either curl alternately or consciously synchronize both arms to move at the same pace. Alternatively, use single-arm lying supine curls to completely eliminate bilateral compensation.

✗ Using too heavy a weight, causing arch in the back

Fix: Excessive weight causes the lifter to arch the lower back and press into the bench to use the body as a lever, even in a lying position. The lower back should remain flat against the bench. If arching appears, reduce the dumbbell weight — this position provides excellent isolation at lighter weights and does not require heavy loading.

How to Program the Dumbbell Lying Supine Biceps Curl

Sets & Reps

3 sets of 10–15 reps. The lying supine curl is a strict isolation exercise that performs best in the moderate-to-high rep range. It is not a primary loading exercise — expect to use lighter weights than standing curls. The value is in the quality of isolation and the bottom-range stretch, not the load magnitude.

Frequency

1–2 times per week as a variation within a biceps training program. It works well as a second biceps exercise on a pulling day after a heavier standing or cable curl variation. The strict nature of the movement means it can be programmed at slightly higher frequency than heavy barbell work without significant recovery cost.

Where to Place It in Your Workout

Use as a secondary or tertiary biceps exercise. Because the lying position makes setup slightly more complex, it's best placed as a dedicated biceps isolation work after the compound and primary curl movements are complete. Works well as the final biceps exercise in a session.

How to Progress

Progress by prioritizing full range of motion before adding weight. The test is whether you can achieve a complete arm hang at the bottom with a smooth, controlled eccentric on every rep. Once this is established consistently, add 2.5 lbs per dumbbell. This exercise rewards form investment more than load investment.

Variations & Alternatives

Incline Dumbbell Curl

The seated incline version of the behind-the-body biceps stretch. Arms hang behind the torso with the bench set at 45–60 degrees. Similar stretched-position emphasis as the lying supine version but more commonly available in any gym. Slightly less strict than the supine version because limited torso lean is possible.

Spider Curl

Performed face-down on the vertical side of an incline or preacher bench. Arms hang straight down and curl from a vertical position. Combines the strict anti-momentum properties of the lying supine curl with the preacher bench's elbow-fixed setup. Extremely effective for peak contraction and biceps isolation.

Cable Incline Curl

Set up a low cable pulley behind an incline bench and curl with the arm behind the body. The cable provides constant tension at the bottom of the range — where a dumbbell provides minimal resistance due to gravity angle — creating superior loading at the stretched biceps position compared to dumbbell incline variations.

Related Exercises

Frequently Asked Questions

What muscles does the Dumbbell Lying Supine Biceps Curl work?

The Dumbbell Lying Supine Biceps Curl primarily targets your Biceps. Secondary muscles worked include Forearms. This makes it an effective exercise for developing your upper arms.

What equipment do I need for the Dumbbell Lying Supine Biceps Curl?

The Dumbbell Lying Supine Biceps Curl requires dumbbell. Make sure your equipment is properly set up and you have enough space to perform the movement with full range of motion.

How do I perform the Dumbbell Lying Supine Biceps Curl with proper form?

Start by lie flat on a bench with your back and head supported, and your feet flat on the ground.. Hold a dumbbell in each hand with your palms facing up and your arms fully extended. Keeping your upper arms stationary, exhale and curl the weights while contracting your biceps. Focus on controlled movement throughout the entire range of motion. See the full step-by-step instructions above for complete form guidance.

Track Dumbbell Lying Supine Biceps Curl in Cora

Cora creates AI-powered workout plans that adapt to your recovery. Log exercises, track progress, and get personalized coaching.

Download Cora for iOS