All of the required muscles.
latissimus dorsi
your abdomen
muscles pull the bones up and down
ABductor muscles pull a limb away from the midline of the body. For instance, abductor muscles pull your leg up and to the side, farther away from the middle of your body.ADductor muscles pull towards the midline of the body. For instance, adductor muscles pull your leg back down closer to the middle of your body.
If its is an overhand pull up then its is the upper back muscles and the forearms. If it is an under hand pull up then it is mainly the biceps.
It takes many muscles to move the leg. It takes about 200 muscles just to walk at an average pace. Forty muscles are needed at a time to help pick up their legs.
a lot primarily: biceps Lats brachioradialis
As a fifty year old woman, if you can do one pull-up you're way ahead of most women. The answer is though: do as many as you can, and remember to train your antagonist(push) muscles.
Because it warms your muscles up before you do a sport so you do not pull a muscle.
because you can pull a muscle and strain them and you will cramp up really badly
Stretching helps to warm up your muscles. when your muscles are warm, it is less likely that you will pull a muscle or sustain a injury. .