Could be due to a --: Number of possibilities, like: 1: a viral infection (eg, flu) causing your symptoms would be the commonest; 2: if you have done some unusual (for you) exercises/activities that your body is not used to; 3: generalized weakness, from whatever cause, like an illness, surgery, injury, etc. See you pcp to get examined/investigated. Good luck.
Answered 2/14/2014
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