Standing Concentration Curl
Also works: Forearms
A concentration curl done bent at the hips with the arm hanging free instead of braced against the inside of a thigh. Nothing supports the upper arm, so the elbow has to hold its own position — which makes it far more honest about your form than the seated version, and far heavier on your lower back.
Own the movement
Set up first, then execute. Every cue below is something you can check on your next set.
Before the first rep
- Take one moderate dumbbell and hinge at the hips until your torso is around 45 degrees to the floor, back flat.
- Plant your feet wider than your shoulders and put your free hand on the same-side thigh or a bench for support.
- Let the working arm hang straight down, palm forward, elbow pointing out and slightly away from your ribs.
- Set your neck neutral by looking at the floor a metre ahead, not up at a mirror.
Every rep
Breathing & tempo — Exhale on the way up, inhale on the way down, and do not hold your breath — a braced hinge plus a held breath drives your blood pressure up for no benefit. One second up, one held, three down.
Sets, reps & load
Where to start, and what to change when it stops being hard.
Start with 6-10 kg. The right weight is one you can lower over a slow three-count for the final rep without your torso rising. Add 2 kg only when you hit the top of the rep range on both arms with an unbroken hinge; a stronger side will often be a full dumbbell increment ahead, and that is fine — run the reps of the weaker arm on both.
What goes wrong
The errors that show up most often, and the cue that fixes each one.
Fix your torso angle against a landmark — a line on the floor, the edge of a bench — and check it every few reps. Rising up shortens the range and lets the shoulder help.
Push your hips back rather than bending your spine, and brace your free hand on your thigh so the erectors are not carrying the whole torso. If you cannot hold a flat back for 12 reps, do the seated version instead.
Halve the dumbbell weight and start each rep from a dead stop with the arm fully straight. This lift is worth doing only if the elbow is the sole joint moving.
Expect to use roughly half of what you curl with two hands on a bar. Chase the contraction and the rep count, not the number on the dumbbell.
Why bother
Hinging forward puts the humerus slightly ahead of the torso, so the long head of the biceps starts the rep already shortened at the shoulder. That takes the shoulder out of the equation and leaves elbow flexion as the only thing that can move the dumbbell, which is why this position produces such a clear, localised contraction at the top.
Losing the thigh brace is the whole difference from the seated version. With nothing to lean the elbow against, any swing or shoulder assistance shows up immediately as the dumbbell drifting sideways. The cost is that the load you can use drops noticeably, and your spinal erectors are holding a hinged position for the whole set.
Where it fits
As the last biceps movement of a pull day, once the heavy bilateral work is finished — 2-3 sets per arm of 10-15. Do not use it as your only curl: the hinge limits how heavy you can go long before your biceps are the limiting factor. Pair it after a barbell or cable curl, not instead of one.
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
Is this better than the seated concentration curl?
It is stricter and it is harder on your back. Bracing the elbow on your thigh when seated stabilises the arm and lets you use more weight; standing removes that crutch and exposes any swing. If your form is already clean, the seated version is the better hypertrophy tool because you can load it. If you cheat your curls, this one will tell you.
Does a concentration curl build the biceps peak?
No. Peak is the shape of your muscle belly and its tendon insertions, and no exercise changes that. What this position does do is emphasise the long head slightly less than an incline curl and give you an unusually clear contraction — useful, but it will not add a peak you were not born with.
Should my elbow point out or stay tucked?
Out, and away from your ribs. That is what separates a concentration curl from a standing one-arm curl performed bent over. A tucked elbow lets your torso rotate into the rep and the shoulder contribute; a flared elbow keeps the humerus fixed.
How heavy should I be able to go?
Roughly half of one side of your barbell curl, often less. A 40 kg barbell curler is usually working with 10-12 kg here. If the number is much higher than that, film a set from the side — you will almost certainly see the shoulder finishing the reps.