Medically reviewed by Amy Kwan, PT Muscle fatigue is a decreased ability to create force with your muscles.Electrolyte imbalance and overuse are some of the most common causes of muscle fatigue.Rest ...

Chronic obstructive pulmonary disease (COPD) is more likely to conjure images of breathlessness rather than weak muscles, but can COPD also cause muscle weakness? Research seems to show a correlation.

Are you constantly tired throughout the day and can't make it through without a nap? Has your brain fog gotten so out of control that your daily to-do list seems impossible to accomplish? Have you ...

This press release is available in German. The extent to which we are able to activate our muscles voluntarily depends on motivation and will power or the physical condition and level of fatigue of ...

For athletes across all sports, few experiences are as agonizing as being forced to leave competition with a sudden muscle cramp. These painful, uncontrolled spasms – formally known as ...

Michael Hales does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...

Myopathy describes disorders of the muscles that cause them to function less effectively. Myopathies can be inherited or acquired, and the symptoms may be present from birth or develop later on.