A good chiropractor would of aid when ever their in numbness, the nerves are easily pinched in the spine that produce such feelings or lack of. Many tmes my chiropractor will work on someone and later they will say he hurt them, he clearly tells them their hurt was already there, they just never felt it before, now that the nerves are working, the body can start the repairs until the hurt goes away.
Otherwise cloths is the normal beast that causes loss of circulation, the less cloths you wear, the better your circulation.