Chin Up vs Pull Up — What Is the Difference?
The terms are often used interchangeably but there is a meaningful difference. A chin up uses an underhand grip (palms facing towards you) with hands roughly shoulder-width apart. A pull up uses an overhand grip (palms facing away) with hands wider than shoulder-width.
The chin up involves the biceps more actively and many people find it slightly easier. The pull up places greater emphasis on the lats and upper back. Both are excellent — both belong in a serious programme. Start with chin ups if you are building from scratch.
How to Perform a Chin Up
- Hang from a pull-up bar with an underhand grip, hands approximately shoulder-width apart. Arms fully extended. This is the start position — do not skip it.
- Brace the core. Pull the shoulder blades down and back before initiating the movement — this engages the lats properly and protects the shoulder joint.
- Pull the body upward by driving the elbows down towards the hips. Think of pulling the bar down to you rather than pulling yourself up to the bar.
- Continue until the chin clears the bar. Pause briefly at the top.
- Lower yourself back to full arm extension under complete control. The lowering phase is where a significant amount of strength is built — do not drop.
- Pause at the bottom before the next rep. Each rep should start from a dead hang.
If You Cannot Do a Full Chin Up Yet
This is not a failure — it is a starting point. Here are the progressions:
- Assisted chin up machine — use the counterweight to reduce the effective bodyweight you are lifting. Reduce the assistance progressively over weeks.
- Resistance band assisted — loop a heavy resistance band over the bar and place a knee in it. The band provides assistance at the bottom of the movement.
- Negative chin ups — jump or step to the top position and lower yourself as slowly as possible. This builds the eccentric strength that transfers directly to full chin ups.
- TRX rows — build the pulling strength with TRX rows before progressing to the bar.
Common Mistakes
- Not starting from a dead hang — every rep must start with arms fully extended. Partial range of motion reduces the stimulus and builds bad habits.
- Kipping — swinging the body to generate momentum. This is a different exercise entirely. Strict chin ups only.
- Not getting the chin over the bar — if the chin does not clear the bar it does not count. Reduce assistance or use a band until you can complete the full range.
- Dropping from the top — the lowering phase matters. Control the descent on every rep.
- Shrugging the shoulders — the shoulders should stay down and back throughout. Shrugging at the top means the traps are compensating for weak lats.
Muscles Worked
- Latissimus dorsi — the primary mover, responsible for pulling the body upward.
- Biceps brachii — particularly active in the chin up due to the underhand grip.
- Rhomboids and middle trapezius — retract the shoulder blades and stabilise throughout.
- Core — works isometrically to prevent the body from swinging.
The 50 Rep Challenge
One approach used in the intermediate programme on this site — work to 50 total chin up reps in a session, however many sets it takes. Start with as many as you can do in one set, rest, go again. Keep going until you reach 50. This builds back and bicep endurance that set-and-rep schemes alone do not achieve.
