Skip to content
Crucible
Download on the App Store
Crucible

Crucible is a precision strength training system built around your body, your equipment, your location, and your time.

Download on the App Store

© 2026 Crucible Fit, LLC. All rights reserved.

Explore

  • Exercise Library

Legal

  • Terms and Conditions
  • Privacy Policy
  • Consumer Health Data Notice

Support

  • Support
  1. Home
  2. /
  3. Exercises
  4. /
  5. Shoulders
  6. /
  7. Band 45 Degrees Biceps Curl

Exercise guide

Band 45 Degrees Biceps Curl

  • Beginner
  • Isolation
  • Rep-based
  • Shoulders
  • Upper arms

This variation places the arms behind the torso to emphasize the long head of the biceps, providing a deep stretch and constant tension throughout the range of motion.

Reviewed by the Crucible team · Updated June 2026

Watch the Band 45 Degrees Biceps Curl demonstrationGuided video and your full workout live in the Crucible app.

Muscles worked

Primary

  • Biceps

Secondary

  • Deltoids
  • Forearms

Equipment

  • Resistance band

Setup

  1. Anchor a resistance band to a power rack at waist height.
  2. Stand facing away from the anchor point, holding the band ends or handles with an underhand grip.
  3. Step forward until your arms are extended behind your torso at roughly a 45-degree angle and the band is taut.
  4. Adopt a staggered stance (one foot forward) to maintain balance and a stable core.

How to do it

  1. Exhale and curl your hands toward your shoulders while keeping your elbows fixed in the position behind your body.
  2. Squeeze your biceps forcefully at the top of the movement for a one-second peak contraction.
  3. Inhale and slowly lower your hands back to the starting position, resisting the pull of the band.
  4. Maintain a controlled tempo, taking approximately two seconds to return to the full stretch.

Form checklist

  • Keep your elbows pinned behind your midline; do not let them swing forward as you curl.
  • Maintain an upright posture with your chest up and shoulders pulled back.
  • Avoid leaning forward or using momentum to move the weight.
  • Keep your wrists straight and neutral throughout the entire movement.

Pro tips

  • Focus on the deep stretch at the bottom of the rep to maximize recruitment of the long head.
  • Supinate your wrists by trying to turn your pinkies toward your shoulders at the top of the curl for a better peak contraction.

Make it harder

  • Step further away from the power rack to increase the resistance and the intensity of the stretch.
  • Implement a 3-second eccentric (lowering) phase to increase time under tension.

Frequently asked

What muscles does the band 45 degrees biceps curl work?
The band 45 degrees biceps curl primarily targets the biceps, and also works the deltoids and forearms as secondary muscles.
What equipment do you need for the band 45 degrees biceps curl?
The band 45 degrees biceps curl uses resistance band.
Is the band 45 degrees biceps curl good for beginners?
Yes. The band 45 degrees biceps curl is a beginner-friendly movement and a strong foundation to build on.

Related exercises

  • Arm Double CrossoverIntermediate · biceps, deltoids, and triceps
  • Arms Stretch On A SupportBeginner · biceps, deltoids, and pectorals
  • Band 45 Degrees One Arm Biceps CurlBeginner · biceps
  • Band Assisted Chin Up From KneeIntermediate · biceps, lats, and trapezius

Train this with a plan, not guesswork

Crucible builds the band 45 degrees biceps curl into a precise program around your body, equipment, location, and time.

Download on the App Store