Like a pincer that crushes. Indeed, like a crab’s grip, to listen to the Teutonic etymology. A sharp, excruciating pain and, fortunately, most of the time fleeting. Thus comes, without warning, the cramp. It occurs when you least expect it and can involve any muscle, although preferring those of the limbs. From the thigh and up to the foot, without sparing the calf, most often targeted.