Chin-ups target a number of major muscle groups in your back, shoulders and arms, along with your core muscles, providing a thorough upper-body resistance workout with one simple exercise. A bodyweight exercise, chin-ups do not require specialized gym equipment beyond a well-anchored chin-up bar. You can incorporate chin-ups as one of the strength-training exercises you perform twice a week as a part of your lifelong fitness program, as recommended by American College of Sports Medicine.
Description
To perform a chin-up properly, grasp a chin-up bar with your palms facing toward you, shoulder-width apart. If necessary, bend your knees so that your feet cannot touch the floor. Pull your body up evenly, with both arms, until your chin is above the bar, and then lower slowly back down until your arms are almost straight. Keep a slight bend in your elbows and shoulders.
Lat Pull-Down
If you can't perform a single unassisted chin-up, you can weight train toward this goal on your own in the gym by performing reverse-grip lat pull-downs on an exercise machine. To perform a lat pull-down, sit on an exercise bench facing the machine's weights. Grasp the bar in your hands, palms facing you, shoulder-width apart. Pull the bar slowly down and into your chest, and then slowly release the weight back up to your starting position.
Bent-Over Row
If you can't do an unassisted chin-up and have no access to a gym with exercise machines, performing bent-over rows with free weights can help you train to do a chin-up. Begin by bending your knees slightly and leaning your torso over at a 60-degree angle, holding a free weight in each hand. Start with your arms straight down at your sides. Lift the weights smoothly until your hands are even with your chest, and then lower them.
Assistance
If you can't do an unassisted chin-up, but you do have access to a chin-up bar and a regular workout partner, you can use assistance to help you achieve your chin-up training goals. Have your partner stand directly behind you as you begin the chin-up. Pull up as high as you can without assistance.
At this point, have your partner provide just enough assistance required for your chin to reach over the bar by pushing up on your ankles. The partner should then let go if you can hold this position unassisted, allowing you to release and lower from this position slowly, fighting the downward pull.
Time Frame
If your goal is to perform an unassisted chin-up as quickly as possible, perform one warm-up set of 10 to 12 lat pull-downs, bent-over rows or assisted chin-ups. After this, increase the weight or decrease the assistance so that you can only perform between one to five reps of the exercise. Rest for two to five minutes between sets, as recommended in the ShapeFit article, "Bodybuilding Techniques -- Sets & Reps Guide For Strength Training Workouts."
Perform between two and five sets of whichever exercise you choose for chin-up training, two or three times a week. You must rest enough between workouts to allow the necessary muscle recovery and growth, as explained in "Muscles and Diet," by Gabe Mirkin, M.D.
If you can already perform chin-ups, the number of reps per set you perform depends on your overall strength and fitness goals, while the resting requirements between workouts stay the same.



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