Law enforcement agents protect life and property, and uphold the law within a jurisdiction. Many of the job requirements are not based on education, but on one's physical and mental characteristics. To become a law enforcement agent, individuals need to complete agency training programs, such as police academy.
A muscle strain, also called a pulled muscle, occurs when a muscle is stretched too far, and microscopic tears occur within the muscle fibers. Common muscle strains include pulled hamstrings, groin strains, and calf strains. The usual symptoms of this type of injury include pain, spasm of the muscle, swelling, bruising, and limited mobility.
Chest muscles are pulled and strained in varying degrees. The mildest pulled muscle injury yields no tears or weakness. A moderate injury results in tears to the chest muscles and tendons. The most severe injury causes the tendons to rupture, resulting in a need for surgery and other medical interventions. The most obvious sign of a pulled muscle is pain. However, the level of pain felt relates to the degree of injury.