Back Exercise · Body Weight
Chin-Up
Also known as: Chinup, Underhand Chin Up, Supinated Pull Up
- Category
- Back
- Equipment
- Body Weight
- Target
- Lats
Biomechanical cues verified by the PlanWorkouts Science Review Board under CSCS editorial oversight; see our editorial standards.
The Chin-Up is a compound back movement designed to train the Lats with direct engagement of the Forearms.
Vertical plane shoulder adduction and scapular depression. Targets the latissimus dorsi from overhead stretch down to peak lat contraction. Executing this with strict form maximizes muscle fiber recruitment while protecting joint structures.
Quick Exercise Facts
Target Muscle Activation
Swap the pull-up's overhand grip for an underhand one and the biceps suddenly do a lot more of the work, which is why most people can chin-up a rep or two more than they can pull-up at the same bodyweight. It still hits the lats hard, just with the arms sharing more of the load. It's a good stepping stone for anyone building toward strict pull-ups.
How to Do the Chin-Up
- Hang from a pull-up bar with your palms facing you and your hands shoulder-width apart.
- Brace your core and pull your body upward toward the bar, leading with your chest.
- Keep pulling until your chin clears the bar.
- Pause briefly at the top, then slowly lower back down to the start.
- Repeat for your planned rep target, maintaining clean technique and steady breathing on every repetition.
Recommended Sets & Reps by Training Goal
70–80% 1RM · 90–120s rest
85%+ 1RM · 2–3 min rest (Calc 1RM)
50–60% 1RM · 45–60s rest
Biomechanical & Joint Load Cues
Vertical plane shoulder adduction and scapular depression. Targets the latissimus dorsi from overhead stretch down to peak lat contraction.
Common Mechanical Mistakes & Form Errors to Avoid
- Excessive Backward Lean: Leaning back past 30 degrees turns a vertical lat pulldown into a horizontal row, shifting work from the lats to the mid-traps and rhomboids.
- Initiating with Arms Instead of Scapulae: Yanking with the biceps before depressing and setting the shoulder blades reduces latissimus fiber recruitment.
- Pulling Behind the Neck: Forcing the bar behind the neck places the glenohumeral joint into extreme external rotation and horizontal abduction under load.
Proper Breathing Patterns & Core Engagement
Inhale deeply at full arm extension. Pull chest up toward handles/bar while exhaling on the downward pull.
Add the Chin-Up to Your Custom Workout Routine
Build a personalized, science-backed workout plan matching your training goals, equipment access, and schedule.
Injury Modification & Joint Safety
Avoid behind-the-neck pulldowns if you experience shoulder instability or cervical strain; always pull to the upper chest. If joint irritation persists, immediately stop and substitute this movement with another exercise from the Back exercises category.
Muscles Worked
The Chin-Up primarily targets the Lats, with Biceps as the primary synergist muscle group, along with the Forearms.
More Back Exercises
Alternate Lateral Pulldown
Archer Pull Up
Assisted Parallel Close Grip Pull-Up
Assisted Pull-Up
Assisted Standing Chin-Up
Assisted Standing Pull-Up
More Lats Exercises
Back Pec Stretch
Band Assisted Pull-Up
Band Close-Grip Pulldown
Band Fixed Back Close Grip Pulldown
Band Fixed Back Underhand Pulldown
Band Kneeling One Arm Pulldown
Equipment Alternatives
Don't have body weight? These target the same lats with different equipment.
Band Assisted Pull-Up
Barbell Bent Arm Pullover
Cable Bar Lateral Pulldown
Exercise Ball Alternating Arm Ups
FAQ
- What muscles does the Chin-Up work?
- The Chin-Up primarily targets the lats as the primary agonist. Synergist assistance is provided by the biceps along with the forearms. Maintaining strict biomechanical alignment ensures maximal tension remains focused on the intended muscle fibers rather than shifting to surrounding stabilizer joints.
- What equipment do I need for the Chin-Up?
- The Chin-Up is performed using no equipment — just body weight. Ensure all equipment is securely positioned with collars or safety pins locked before loading working sets. If you train in a home gym or minimal setup, explore our equipment-free and resistance band alternatives below.
- What is the most common form mistake on the Chin-Up?
- The most frequent error is excessive backward lean: Leaning back past 30 degrees turns a vertical lat pulldown into a horizontal row, shifting work from the lats to the mid-traps and rhomboids.. Controlling the 2 to 3-second eccentric lowering phase ensures maximal hypertrophic stimulus while shielding connective tissue.
- How many sets and reps should I perform on the Chin-Up?
- For muscle hypertrophy and size, aim for 3 to 4 working sets of 8 to 12 repetitions at 70% to 80% of your 1RM with 90 to 120 seconds rest. For absolute strength development, prioritize 4 to 5 sets of 3 to 6 heavier reps with 2 to 3 minutes rest.
- What's a good alternative to the Chin-Up?
- If you don't have access to the space or setup it needs, the Band Assisted Pull-Up targets the same lats using band instead. This alternative replicates the same joint angle and movement plane while allowing you to train effectively with different available gear. You can also substitute it seamlessly in our free Workout Plan Builder.