A member asked:

Help please? what is muscle fatigue and what causes it?

A doctor has provided 1 answer

Many possibilities: There are a lot of possibilities. If your muscles are simply tired when you work out then it is probably just related to conditioning and a need to increase your strength. If there is weakness going up stairs, weak grip to where you are dropping things, or a weakness of the eyelids or voice, then you should be checked by your doctor.

Answered 7/1/2014

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