Chin Ups: How to Do Them, Muscles Worked and Benefits

The chin up is a bodyweight pulling exercise where you hang from a bar with your palms facing you and pull your chin over it. It is one of the best upper-body exercises you can do, building your back, biceps and grip in a single move, and it needs nothing more than a bar to hang from. The underhand grip lets your biceps join in, which makes chin ups a fraction easier than pull ups and a brilliant place to start if you are working towards your first rep. Here is how to do them, the muscles they work, how they differ from pull ups, and how to build up to your first one.

How to do a chin up

All you need is a sturdy bar you can hang from with your feet clear of the floor. A doorway or wall-mounted pull up bar is ideal at home.

1. Grip the bar. Take an underhand grip (palms facing you) roughly shoulder-width apart. Wrap your thumbs around the bar.
2. Start from a dead hang. Hang with your arms almost straight, shoulders active (think about pulling your shoulder blades down, not shrugging up towards your ears).
3. Pull. Drive your elbows down towards your ribs and pull your chest up to the bar. Lead with your chest, not your chin, and keep your body from swinging.
4. Clear the bar. Pull until your chin is over the bar and your collarbone is close to it. Squeeze your back and biceps at the top.
5. Lower under control. Lower yourself all the way back to a full hang, slowly. That controlled lowering is where a lot of the strength is built, so do not just drop.

Muscles worked

The chin up is a back and arm exercise, and the underhand grip makes it especially good for the biceps. An EMG comparison of chin ups and lat pulldowns confirms the chin up strongly recruits the back and elbow flexors through a full range (EMG study of chin ups).

• Latissimus dorsi. Your lats are the big fan-shaped back muscles that pull your upper arms down and in. They are the main movers and are what chin ups build most.
• Biceps brachii. The underhand grip lets your biceps contribute strongly to the pull, which is why chin ups build arms so well and feel a little easier than pull ups.
• Forearms and grip. Hanging your full bodyweight and pulling builds serious grip and forearm strength.
• Rear shoulders and mid-back. Your rear delts, rhomboids and lower traps work to pull your shoulder blades down and together.
• Core. Your abs brace to stop your body swinging and to keep you rigid through the pull.

Chin ups versus pull ups

The only difference is the grip, but it changes the feel. A chin up uses an underhand grip (palms towards you) and brings your biceps and chest into the movement more, so most people find it slightly easier. A pull up uses an overhand grip (palms away) and shifts a little more work onto the outer back and shoulders, making it generally harder. Neither is better, and using both over time gives your back and arms a more complete workout. If you can only do one right now, chin ups are usually the friendlier starting point.

Benefits

• It builds your back and arms together. Few exercises train the lats and biceps as effectively in one move, which is why chin ups are a staple for a stronger, wider back and bigger arms.
• It needs almost no kit. A single bar is enough, so it is perfect for home training and travels well.
• It builds real, useful strength. Pulling your own bodyweight over a bar carries over to climbing, carrying and general upper-body strength, and it counts towards the muscle-strengthening activity the NHS recommends on at least two days a week.
• It develops a strong grip. Hanging and pulling under load is one of the best ways to build the grip and forearm strength that helps every other lift.
• It scales with you. Bands make it easier, and a weight belt or backpack makes it harder, so the same movement stays useful from your first rep to your fiftieth.

Common mistakes

Half reps. Stopping short of a full hang at the bottom or failing to get your chin clearly over the bar shortchanges the movement. Own the full range, from straight arms to chin over the bar.

Swinging and kipping. Generating momentum with your hips and legs turns a strength exercise into a swing. Keep your body tight and still, and pull with your back and arms.

Shrugging up. Letting your shoulders ride up towards your ears at the bottom takes your lats out of it and stresses the shoulder. Start each rep by setting your shoulder blades down.

Dropping down. Letting go of the tension and dropping from the top wastes the most productive part of the rep. Lower yourself slowly every time.

Flaring the elbows wide. Pulling with elbows pointing out to the sides is weaker and harder on the shoulders. Drive your elbows down and slightly in front of you.

How to get your first chin up

Getting from zero to one is the hardest step. Train these two or three times a week and the full rep usually arrives within a few weeks.

• Band-assisted chin ups. Loop a resistance band over the bar, put a foot or knee in it, and let it take some of your weight. Use a lighter band as you get stronger.
• Negative chin ups. Jump or step up to the top position, then lower yourself as slowly as you can, aiming for 3 to 5 seconds. These build the strength for the full rep fast.
• Dead hangs. Simply hang from the bar for 20 to 40 seconds to build the grip you need to hold on.
• Inverted rows. Rowing your bodyweight from a bar or dip station set at chest height builds the same pulling muscles at an easier angle.

Sets and reps

• Building your first rep: 3 to 4 sets of band-assisted or negative reps, resting 90 seconds, 2 to 3 times a week.
• Building strength once you can do a few: 4 to 5 sets of 3 to 6 reps, resting 2 minutes.
• Building size: 3 to 4 sets of 6 to 12 reps. Add weight with a belt or backpack once bodyweight sets feel easy.

Rest well between sets, because chin ups are demanding and quality reps matter more than grinding out sloppy ones.

Recommended reads

1. The best pull up bar in the UK
2. How to do the lat pulldown
3. The best resistance bands in the UK
4. Forearm exercises for a stronger grip
5. Home gym equipment guides