Stiffness can only be caused by one of two processes that occur in the body: voluntary tension or involuntary tension. Sleeping in front of a fan or open window could cause one to shiver or get goosebumps, which may form if they are feeling chilled, but it would probably not make muscles stiff.
After trying every conventional therapy for crippling, chronic low-back pain, I discovered the problem was completely within my control. I experienced an amazing health transformation in a matter of weeks. Mind-Body medicine worked for me, and it can for can too! READ RECKONING WITH OURSELVES & READ BACK STORY