The mind shaped its habits and habits reshaped the body. A lifelong rider walked with bowed legs, a seafarer stood wide no matter how sure the purchase. Women who twirled strands of their hair would in time come to sit with heads tilted to one side. Some people prone to worry might grind their teeth, and years of this would thicken the muscles of the jaws and file the molars down to smooth lumps, bereft of spurs and crowns.
