A member asked:

What causes ur body to b stiff specifically after a workout? why would my joints crack so much when i workout? knee/ foot/ankle painful after wo.

A doctor has provided 1 answer
Dr. Richard Zimon answered

Specializes in Internal Medicine

When we: exercise...especially without the proper "stretching" og our muscles prior to the exercise we "break" microscopic blood vessels and they bleed a very very small amount of blood! This is like an INTERNAL bruise!!! We call it a "charliehorse" or STIFFNESS! Your joints are YOUNG and have CARTILAGE which is LIVING TISSUE!! Same rules apply! Hope this helps! Dr Z

Answered 2/27/2016

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