Skip to content
Crucible Fit
  • The Crucible
  • The Week
  • Programs
  • Train Your Way
  • Pricing
Get Crucible
  • The Crucible
  • The Week
  • Programs
  • Train Your Way
  • Apple Watch
  • Pricing
  • FAQ
  • Training Guides
Get Crucible
Crucible Fit

A daily functional fitness test for iPhone, Apple Watch and Android. Stations, reps and the Crux, sized to your readiness and your kit.

Download on the App StoreGet it on Google Play

Crucible Fit

  • The Crucible
  • The Week
  • Programs
  • Train Your Way
  • Apple Watch
  • Pricing

Explore

  • Training Guides
  • Exercise Library
  • FAQ
  • Press
  • Support

Legal

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

CRUCIBLE FIT™ and Crux by Crucible Fit are trademarks of Crucible Fit, LLC.

© 2026 Crucible Fit, LLC. All rights reserved. Apple, the Apple logo, iPhone and Apple Watch are trademarks of Apple Inc., registered in the U.S. and other countries. App Store is a service mark of Apple Inc. Google Play and the Google Play logo are trademarks of Google LLC.

  1. Home
  2. /
  3. Exercises
  4. /
  5. Back
  6. /
  7. Single Arm Pull Up

Exercise guide

Single Arm Pull Up

  • Advanced
  • Compound
  • Rep-based
  • Back
  • Shoulders
  • Upper arms
  • Waist

The single-arm pull-up is an elite-level bodyweight exercise that builds extreme unilateral pulling strength, focusing on the latissimus dorsi and biceps while demanding significant core stability. It is highly effective for correcting muscle imbalances and developing peak upper-body power.

Reviewed by the Crucible Fit team · Updated June 2026

Watch the Single Arm Pull Up demonstrationVideo and instructions for every movement are in the Crucible Fit app.

Muscles worked

Primary

  • Lats
  • Rhomboids
  • Trapezius

Secondary

  • Abs
  • Serratus anterior

Equipment

  • Pull up bar

Setup

  1. Grip the pull-up bar with one hand using a strong overhand or neutral grip.
  2. Hang with the working arm fully extended, keeping the shoulder 'packed' by depressing and retracting the scapula.
  3. Keep the non-working arm tucked close to your chest or held at your side to minimize momentum.
  4. Engage your core and squeeze your legs together to create full-body tension and prevent rotation.

How to do it

  1. Exhale and pull your body upward by driving your elbow down toward your hip, focusing on leading with the lat rather than the bicep.
  2. Continue pulling until your chin clears the bar, keeping your body as vertical as possible.
  3. Inhale as you lower yourself back to the starting position with a controlled, 3-second eccentric phase.
  4. Maintain an 'active hang' at the bottom, keeping tension on the muscles rather than dead-hanging on the shoulder joint.

Form checklist

  • Keep the shoulder blade pulled down and back; do not let the shoulder shrug toward your ear.
  • Minimize excessive swinging or 'kicking' with the legs to ensure the lats do the work.
  • Ensure the chin passes the bar for a full range of motion.
  • Keep the core braced to prevent the torso from spinning during the ascent.

Pro tips

  • Focus on 'crushing' the bar with your grip to recruit more motor units through irradiation.
  • Initiate the movement by depressing the scapula before the elbow starts to bend to ensure lat dominance.
  • If struggling with the full movement, use the non-working hand to grip the wrist of the pulling arm for slight assistance.

Make it harder

  • Perform the movement with a weighted vest to increase the resistance.
  • Increase the eccentric phase to 5-10 seconds to maximize time under tension and structural adaptation.

Frequently asked

What muscles does the single arm pull up work?
The single arm pull up primarily targets the lats, rhomboids, and trapezius, and also works the abs and serratus anterior as secondary muscles.
What equipment do you need for the single arm pull up?
The single arm pull up uses pull up bar.
Is the single arm pull up good for beginners?
The single arm pull up is rated advanced. Build a base with simpler variations first, then progress to it with light load and strict form.

Related exercises

  • Band Bent Over Lat PulldownIntermediate · lats, rhomboids, and trapezius
  • Band Bent Over One Arm KickbackBeginner · biceps, lats, rhomboids, and trapezius
  • Band One Arm Twisting Seated RowIntermediate · lats, rhomboids, and trapezius
  • Barbell Incline RowIntermediate · lats, rhomboids, and trapezius

Train it with Crucible Fit.

Every movement in this library is in the app with video and instructions, ready for your own sessions on the days between Crucibles. Your first Crucible is on us.

Download on the App StoreGet it on Google Play

See how a Crucible works