biceps and triceps
When one muscle in a pair contracts the other expands.
The injury would allow for the joint the muscles are attached to, to move in one direction...either only up becasue the lower muscle was damaged...or only down because the top muscle of the pair was damaged.
One might find a pair of report Boots on Pronto. There is a wide selection of Report Boots, ranging from $60 to $300, depending on the style and material.
contract
deltoids
When one muscle of a pair contracts, the other muscle of the pair relaxes to allow movement of the body part.
When one muscle of a pair contracts, the other muscle of the pair relaxes to allow movement of the body part.
Your pelvis is large with coolness
When one muscle in a pair contracts the other expands.
Someone looking for a pair of black satin shoes can find them at most shoe stores. One might try Payless Shoes. Online, one might purchase a pair of satin shoes on Amazon or eBay.
Biceps/triceps.
One might find information about treating muscle spasms at the online site WebMD. They have great details on the causes and potential treatments for these spasms.