Incline Dumbbell Curl

What is the Incline Dumbbell Curl?

The incline dumbbell curl is a biceps isolation done lying back on an incline bench, so the arms hang behind the line of the body. That position lengthens the biceps at the bottom, creating a deep loaded stretch that makes it one of the best movements for the long head and overall biceps growth.

Muscles worked

Primary: Biceps

The biceps brachii flexes the elbow from a fully stretched start; with the upper arms behind the torso, the long head is lengthened and loaded harder than in a standing curl.

Secondary: Forearms

The forearm flexors assist with grip and help control the supinating wrist through the curl.

How to perform the Incline Dumbbell Curl

1. Set an adjustable bench to roughly 45 to 60 degrees and sit back so your arms hang straight down behind the line of your torso.
2. This shoulder-extension position pre-stretches the long head of the biceps, which is exactly why the incline curl is picked over a standing curl.
3. Let the dumbbells hang at full stretch with a supinated grip and the upper arms held back, not allowed to drift forward.
4. Curl the dumbbells up while keeping the elbows fixed behind the torso, feeling the stretched long head do the work.
5. Squeeze at the top without swinging the upper arms forward, which would cheat away the stretch advantage.
6. Lower slowly all the way back to the deep hang, keeping the shoulders pinned to the pad the entire descent.

Suggested working range: 10–15 reps. Default progression: double progression.

Mechanics

A single-joint isolation on an incline bench: elbow flexion with the upper arms hanging back behind the body. The reclined angle is the whole point: it puts the biceps on stretch at the bottom, which a standing curl never does.

Form cues

• •Set the bench to a moderate incline and let the arms hang straight down, behind your torso.
• •Keep the upper arms still and let the biceps stretch fully at the bottom of each rep.
• •Curl by flexing only the elbow, rotating to palms-up as you rise.
• •Lower slowly back into the stretch rather than letting the arms swing down.

Common mistakes

• •Swinging the upper arms forward off the stretch, which throws away the incline advantage entirely.
• •Sitting the bench too upright so the arms never hang behind the torso to stretch the long head.
• •Cutting the descent short and never letting the arms reach the deep hang.
• •Letting the shoulders round forward off the pad to cheat the weight up.

Variations & alternatives

• •Standing dumbbell curl, less stretch but easier to load and control.
• •Spider curl, chest-down on an incline to bias the short head instead.
• •Preacher curl: braces the arms in front to isolate the biceps from the shortened position.
• •Incline hammer curl, the same stretched position with a neutral grip for the brachialis.

Barbell Curl

Biceps · Barbell

Dumbbell Curl

Biceps · Dumbbell

Hammer Curl

Biceps · Dumbbell

Cable Curl

Biceps · Cable

Concentration Curl

Biceps · Dumbbell

Programming: sets, reps & when to use it

Program the incline dumbbell curl in the library’s 10–15 rep range as a stretch-focused biceps accessory. Lower under control to feel the stretch at the bottom, which is where much of the growth stimulus comes from, and keep the weight light enough to stay strict. Run it after your pulling work.

Frequently asked questions