When a muscle contracts, it pulls with a force generated by the muscle fibers contracting and shortening.
it hurts
When a horse pulls a cart, the action is on the horse. The horse exerts force on the cart through its harness, which causes the cart to move. This action is a result of the horse's muscle power and body strength.
A viable alternative to cable pulls for strength training is resistance bands. These bands provide a similar resistance to cables and can be used for a variety of exercises to target different muscle groups. They are portable, versatile, and can be easily adjusted to increase or decrease the resistance level.
an erection
The muscle responds and pulls on a bone by way of a tendon. It can not react until the nerve tells it to.
Diaphram
shoulder
The muscle responds and pulls on a bone by way of a tendon. It can not react until the nerve tells it to.
you have then stretched your tendon / muscle beyond the normal range .
When one muscle pulls, the other muscle relaxes.
no its simply just a strain on your muscle, in which you need to let it heal.