What would cause your muscles to over work ? my doctor told me.my burning pain is from pots and my muscles overworking ? i don't get it ? possible ?

Need more info: Or is possible to "overwork" your muscles. This usually suggests there is passion and fatigue of the muscles that can be associated with inc blood test called ck. However there are other things that can cause this, such as thyroid disease and inflammatory conditions. Need to know if your dr did labs or other test to clarify symptoms. Burning paincan be seen with nerve inflammation/irritation.