5 Answers

Do you really need to ask?

Fibromyalgia comes to mind. Or, could be you exerted yourself prior to hurting. If it continues, see a doctor………….

Old age combined with lack of movement? The possibilities are endless. A doctor could probably answer your question better than we can.

Have you been working at a physical task that you do not usually do?  Or do you have a joint problem, which causes aches and pains in the bones?   If it is the soft tissue type, like muscles, take it easy, anti-inflammatory medications, and hot soaks in the tub, or ice massage.  Have Styrofoam cups of ice rubbed on the painful muscles.  The cup will keep ice from freezing the hands of the user. 

could be a lot of reasons. We'd have to know more about you.Do your muscles hurt, or deep within your organs ? Do your bones or joints hurt ? How old are you ?  If it  doesn't let up or happens again, see a doctor.