How to do the Barbell Behind Back Finger Curl
ForearmsBarbellIntermediate
The barbell behind back finger curl is one of the most direct and demanding ways to build crushing grip strength and forearm thickness that most lifters never develop. Mastering this movement places unique tension through the finger flexors and forearm belly that standard curls simply cannot replicate.
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Primary
Forearms
Secondary
Grip
Step-by-step
- Rack a barbell at hip height, grip it behind your back with hands shoulder-width apart, palms facing away, and step out to a standing position.
- Let the bar roll down to your fingertips under control, allowing a full stretch through the finger flexors and forearm.
- Curl the fingers back into a closed grip, squeezing the bar forcefully back into the palm and flexing the forearms hard at the top.
- Lower the bar back to fingertips in a slow, deliberate 2 to 3 second negative before beginning the next rep.
Common mistakes
- Rushing through the finger extension and skipping the stretch reflex — pause briefly at the bottom with the bar on fingertips to load the flexors fully before curling.
- Using too much weight and compensating with wrist flexion rather than true finger curling — reduce the load and keep the wrists neutral throughout the movement.
- Letting the bar drift away from the body during the set — keep the barbell in light contact with the glutes to maintain a consistent bar path and reduce shoulder strain.
Pro tip — Focus on initiating each rep from the distal finger joints first, not the palm, to maximize recruitment of the finger flexors and build true grip endurance rather than just wrist flexor strength.
Sets & reps by goal
Build muscle3–4 sets × 10–15 reps
Get stronger3–4 sets × 6–8 reps
Lose fat / tone3 sets × 12–20 reps
Rest: 60–90 sec between sets.
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