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Exercise guide

Chin-up: muscles worked and how to do it

The chin-up hangs from a bar with an underhand, shoulder-width grip and pulls your chin over it. It is listed with the arms because it works the biceps hard, but GymTribe's library, where it is called Underhand Chin-Up, counts it toward the lats.

Illustration of a chin-up, showing the start and end positions

How to do a chin-up

  1. Grip the bar underhand, palms facing you, hands about shoulder-width apart.

  2. Hang with your arms straight, shoulders pulled down and your midsection braced.

  3. Pull yourself up, driving your elbows down toward your ribs.

  4. Keep going until your chin is over the bar.

  5. Lower yourself under control to a full hang.

These steps describe common technique. If something hurts, stop and ask a qualified coach or clinician.

Common chin-up mistakes

  • Kipping or swinging

    Keep your legs still and your body tight for every rep.

  • Chin not clearing the bar

    Only count the reps that get there.

  • Skipping the full hang

    Straighten your arms at the bottom of each rep.

  • Grip too narrow

    Hands about shoulder-width suits most people's elbows and wrists.

How to track your chin-up

Log the reps of every set. Over a few weeks, your most reps in one set and in one session show whether you are getting stronger. When you add weight, log it with the reps.

What GymTribe charts for Underhand Chin-Up

  • Most reps in one set
  • Max session reps across a workout
  • Heaviest weight once you add load
  • Estimated 1RM once you add load

Chin-up compared

Chin-up questions

What muscles do chin-ups work?

Mostly the lats, with the biceps doing more than in a pull-up, plus the upper back and forearms. In GymTribe's muscle map, each set of Underhand Chin-Up counts toward the lats.

Are chin-ups easier than pull-ups?

Most people can do a few more chin-ups, because the underhand grip lets the biceps help more. Track them separately; GymTribe lists Pull-Up as its own exercise.

How do I add weight to chin-ups?

Use a dip belt with a plate, or hold a dumbbell between your feet. Log the added weight with your reps.

How do I track my chin-up in GymTribe?

Log each set's reps under Underhand Chin-Up. Every session adds a point to its charts, including most reps in one set and max reps in a session, and a New PR alert appears when a set beats your rep record. If you add weight, log it too, and the heaviest weight and estimated 1RM charts fill in.

More lats exercises in GymTribe

GymTribe counts these toward the lats too. The ones with a guide are linked.

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