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.
In most cases, you can treat a tendon injury at home. To get the best results, start these steps right away: 1  Rest the painful area, and avoid any activity that makes the pain worse. 2  Apply ice or cold packs for 10 to 15 minutes at a time, as often as 2 times an hour, for the first 72 hours.