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.
Stretching â Gentle movements by going through your full range of motion can be very helpful. Do not push stretches too hard without discussing first with a Physical Therapist, Massage Therapist, or Athletic Trainer. You can over-stretch, and just because a muscle is hurting, doesnât mean it needs to be elongated.