Behind-the-Back Barbell Wrist Curl
The behind-the-back barbell wrist curl is an isolation exercise that works your forearms by curling a barbell up using only your wrists. The bar sits behind your body, so you can use a short, controlled range and keep your torso still. It suits beginners and experienced lifters who want to build forearm size and a stronger grip, as long as they start light.
Muscles worked
The Behind-the-Back Barbell Wrist Curl mainly works your forearms.
Setting up
- Set a barbell on a rack or safety pins at about mid-thigh height, with the bar behind you. Load it lightly to start, for example the empty bar, because the wrists tire quickly.
- Stand with your back to the bar, feet about hip-width apart. Reach behind you and take an overhand grip with your palms facing away from your body, hands roughly shoulder-width apart.
- Lift the bar off the rack by standing tall, then take a small step forward so it hangs clear. Keep your arms straight and your elbows tucked in against your sides.
- Stand upright with your chest up, ribs down and knees soft, so only your hands and wrists move.
How to do the Behind-the-Back Barbell Wrist Curl
- Hold the bar behind your legs with straight arms, and your wrists in a neutral position.
- Let the bar roll slowly down towards your fingertips, lowering your wrists until you feel a gentle stretch along your forearms. Keep your fingers wrapped loosely around the bar.
- Close your fingers around the bar and curl your wrists so the bar rises up and backwards.
- Squeeze your forearms hard at the top for a second, without bending your elbows or leaning forward.
- Lower the bar under control back to the stretched position over about two to three seconds.
- Repeat for your planned reps, then walk the bar back to the rack and set it down. Do not drop it from your hands.
Form tips
- Pin your elbows to your sides and keep your arms still. If your elbows bend or swing, the weight is too heavy.
- Think about moving only your hands. The bar should travel a short distance, driven by the forearm muscles at the base of your palms.
- Pause and squeeze at the top of every rep. You should feel a tight, working sensation on the underside of your forearms.
- Take about two to three seconds to lower the bar. The lowering phase builds as much as the lift.
- Stand tall with your weight over the middle of your feet so you are not rocking to move the bar.
Common mistakes
Using too much weight
Drop the load until you can complete every rep with straight arms and no body movement. Wrists are small joints, and the exercise works best with light to moderate weight and strict reps.
Swinging or leaning back
Stand tall with your chest up and your body still. If you need momentum to move the bar, reduce the weight and slow each rep down.
Bending the elbows to help lift
Keep your arms straight and your elbows tucked in. Only your wrists and fingers should move the bar.
Rushing or cutting the range short
Lower the bar slowly until you feel a stretch, then curl up and squeeze at the top. Use a smooth, full range that you can control without jerking.
Sets and reps
| Build strength | 3-4 sets of 6-10 reps with a challenging but controlled weight, resting 90-120 seconds between sets. |
|---|---|
| Build muscle | 3-4 sets of 10-15 reps, lowering for 2-3 seconds and squeezing at the top, resting 60-90 seconds. Train 1-2 times a week. |
| Fat loss or general fitness | 2-3 sets of 12-20 reps with a light weight, resting 45-60 seconds. Add it at the end of a full-body session alongside bigger exercises. |
Pick a weight where the last rep or two of each set is hard but your form stays clean. When every set feels easy, it's time to go up.
Behind-the-Back Barbell Wrist Curl alternatives
Machine taken, or want some variety? These work the same main muscles.
Behind-the-Back Barbell Wrist Curl FAQs
What muscles does the behind-the-back barbell wrist curl work?
It works your forearms, mainly the muscles on the palm side that close your hand and bend your wrist. Holding the bar also challenges your grip.
How heavy should I go on behind-the-back wrist curls?
Start with the empty bar or a very light load and choose a weight you can lift for 10-15 smooth reps with no swinging. Add weight in small steps, only when your form stays strict on every rep. If anything hurts, stop and get it checked.
Is this better than a standard wrist curl?
Neither is better, they are just different. The behind-the-back version lets you stand and keep the bar close to your body, and some people find it easier to set up. A seated wrist curl with your forearms supported can make it easier to keep your arms still, so choose whichever you can do with the best control.
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