Spring washers, sometimes called disc springs, are a subtype of washers. They lend their mechanical capabilities to the unique profile of the material: when subject to a load, the irregularities of the washer compress with a proportionate resistance to return to their predeflected shape.
You should never stretch a pulled muscle to the point of pain or you risk re-injuring it. Do not overstretch the pulled muscles. Too much stretching can retear injured muscle fibers. Gently stretching a pulled muscle may relax the surrounding muscle fibers, which may be tight in response to the injury.
If youâre in the throes of a cramp, stretching can provide relief. For a foot or calf cramp, sit or lie down and flex the toes of the affected leg or foot upward toward your nose, says Eldadah. This action works by pulling the calf and foot muscles in the opposite direction of the contracted muscles.