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.
Perform gentle stretching to the forearm musculature. These stretches should be performed in a PAIN-FREE manner. You should feel a slight stretch or pull along the muscles, but elbow pain should not be present. Hold stretch for 10 seconds and repeat 10 times.