Dumbbell Prone Incline Curl
Lying face down on a bench set at 45 degrees with the arms hanging straight below the shoulders. Gravity pulls the dumbbells directly away from you at the bottom, so there is no resting position and no way to swing — the biceps is loaded from the first millimetre of the rep.
Own the movement
Set up first, then execute. Every cue below is something you can check on your next set.
Before the first rep
- Set an incline bench to about 45 degrees; steeper puts your face into the pad, shallower turns it into a spider curl.
- Grab a dumbbell in each hand and lie chest-down with the top of the pad under your collarbones.
- Straddle the seat with your feet on the floor for stability, or rest your knees on it if the bench is high.
- Let both arms hang straight down, perpendicular to the floor, palms turned forward.
- Choose 30-40% less than your standing curl weight — the strict position will not tolerate more.
- Set your shoulder blades back before the first rep so the shoulders do not roll forward under load.
Every rep
Breathing & tempo — Exhale as you curl, inhale as you lower. Two seconds up, no pause at the top, three seconds down, half a second hanging dead at the bottom. Chest-down breathing is restricted, so do not hold your breath across reps.
Sets, reps & load
Where to start, and what to change when it stops being hard.
Start at 6-10 kg per hand. If you strictly curl 14 kg standing, expect 8-10 kg here. Good looks like a dead hang at the bottom of every rep with the chest never leaving the pad. Add 2 kg only once you hit the top of your rep range for all sets with a three-second lowering phase.
What goes wrong
The errors that show up most often, and the cue that fixes each one.
Keep both collarbones in contact with the pad for the whole set and stop the set on the rep where contact breaks. That rep count is your honest number.
Watch your elbows in a side mirror or film one set. The upper arms should stay pointing straight at the floor for every rep; if they move, drop 2-4 kg.
Let the arms hang completely dead between reps for half a second. The stretched bottom position is the whole reason to lie face down; cutting it off wastes the setup.
Take a third off and aim for 12 clean reps. The load will look small in your log — record it as its own lift rather than comparing it to standing numbers.
Why bother
Standing curls give the biceps a free ride at the bottom: with the arms hanging by your sides the moment arm is near zero, so the first few centimetres cost almost nothing. Face down on an incline, the arms hang in front of you and the forearm is already perpendicular to the floor at the start, so tension is maximal at full extension.
Being pinned chest-down against the pad removes hip drive, torso lean and shoulder swing at once. There is nothing left to cheat with, which is why the weights are humbling and why this is one of the better places to train the stretched end of the curve where much of the growth stimulus sits.
Where it fits
Second or third biceps movement, after a heavy standing or cable curl. Three sets of 10-15. Pair it with a movement that loads the top of the range, such as a preacher or spider curl, so you cover both ends of the curve — this one gives you almost nothing near peak contraction.
If this one isn't it
No kit, too hard, or too easy — here's where to go instead.
Same job, different kit
Start here instead
When this gets easy
Asked and answered
How is this different from a spider curl?
A spider curl uses a steep bench, near vertical, so the arms hang almost straight down against the pad and resistance peaks near the top. At 45 degrees the arms hang free in front of you and the hardest point is at full extension. They are complementary, not duplicates — one loads the stretch, the other the squeeze.
Why do the last few centimetres at the top feel easy?
Because the forearm approaches vertical, and a vertical forearm has almost no moment arm against gravity. That top range is genuinely unloaded here. Stop at forearms-parallel and get your peak-contraction work from a cable or preacher curl instead.
Is the stretched position risky for the biceps tendon?
A controlled full extension with a sensible load is fine and is part of the point. What is risky is bouncing out of the bottom with a weight you cannot lower under control. Take three seconds down, pause dead, and start the next rep from a stop.
Should I use an incline bench with a chest pad or a flat bench propped up?
Any adjustable incline bench works; you need the pad supporting your chest and enough height that the dumbbells clear the floor at full extension. If the bench is low, straddle the seat and let your feet take the height rather than shortening the rep.