Muscle contraction is the tightening, shortening, or lengthening of muscles when you do some activity. It can happen when you hold or pick up something, or when you stretch or exercise with weights.

Your body naturally responds to stress by tightening muscles as part of the ancient fight-or-flight response, but modern life has created a perfect storm of chronic tension that your conscious mind ...

The flow of water within a muscle fiber may dictate how quickly muscle can contract, according to a new study. The flow of water within a muscle fiber may dictate how quickly muscle can contract, ...

Repetitive muscle contractions can cause pain in various parts of the body. But did you know that one of the simplest and most effective ways to relieve muscle pain involves something as ordinary as a ...

One of the most troubling outcomes of jaw clenching is its connection to cervicogenic head-aches — headaches that originate ...

Spasticity creates chronic muscle tightness and stiffness, which reduces overall mobility. If left unmanaged, spasticity may lead to complications, such as pain and frozen joints. Treatment for ...