Chin-Up

What is the Chin-Up?

The chin-up is a bodyweight vertical pull done with an underhand, roughly shoulder-width grip, pulling the chin over the bar. The supinated grip brings the biceps in more than a pull-up, making it usually a little easier and a favourite for building the lats and arms together with nothing but a bar.

Muscles worked

Primary: Back

The lats are the prime mover, driving the upper arms down and back to pull the body up toward the bar through a full range.

Secondary: Biceps

The biceps take a bigger share of the work than in an overhand pull-up because the underhand grip puts them in a stronger pulling position.

Stabilizers

The core braces to keep the body from swinging, and the forearms grip the bar hard to hold you on it for every rep.

How to perform the Chin-Up

1. Grip the bar with a supinated palms-facing-you grip at roughly shoulder width, which lets the biceps assist and gives most people more strength than a pull-up.
2. Hang with the shoulders set down and back and the chest lifted, taking the slack out of the joint before the first pull.
3. Brace the trunk and cross the ankles behind you to keep the body from swinging as you initiate the pull.
4. Pull by driving the elbows straight down toward the ribs and leading with the chest, keeping the wrists neutral rather than curling with them.
5. Continue until the chin clears the bar and the collarbones reach bar height, squeezing the lats and biceps together at the top.
6. Lower slowly to a full active hang, controlling the eccentric where much of the back and arm growth stimulus is earned.

Suggested working range: 5–10 reps. Default progression: double progression.

Mechanics

A bilateral vertical pull with a supinated grip: the shoulders extend and adduct while the elbows flex, moving your bodyweight from a dead hang to chin-over-bar. As a compound it trains the back and biceps together, and because the load is your own bodyweight, progression comes from adding reps and then hanging weight from a belt.

Form cues

• •Start from a full dead hang and initiate by pulling the shoulder blades down before the elbows bend.
• •Drive the elbows down toward the floor and think about pulling the chest to the bar.
• •Keep the body hollow and braced so you rise straight up rather than swinging or kipping.
• •Lower under control all the way to a full hang; the eccentric builds much of the strength.

Common mistakes

• •Curling with the wrists and forearms to muscle the reps rather than driving the elbows down toward the ribs.
• •Failing to reach a full active hang at the bottom and grinding out tiny partial reps in the top range.
• •Swinging and kipping the hips to generate momentum instead of a strict controlled pull.
• •Rushing the descent and dropping from the top, wasting the eccentric where much of the growth stimulus lives.

Variations & alternatives

• •Pull-up: the overhand-grip version that shifts more of the work onto the lats and upper back.
• •Neutral-grip pull-up: palms facing, often the most shoulder-friendly of the three grips.
• •Assisted pull-up (band or machine): the standard regression while building up to full reps.
• •Weighted chin-up: a belt or vest to add load once bodyweight reps become easy.

Conventional Deadlift

Back · Barbell

Barbell Row

Back · Barbell

Pull-Up

Back · Bodyweight

Lat Pulldown

Back · Machine

Seated Cable Row

Back · Cable

Programming: sets, reps & when to use it

Program chin-ups as a primary vertical pull in the library’s 5–10 rep range. If you can’t yet reach that range, use band assistance or negatives to accumulate volume; once you exceed it, add weight to keep it challenging. Because the biceps are heavily involved, they pair well on a pull day alongside rows and direct arm work.

Frequently asked questions