1. It helps build muscle protein.

2. It helps maintain nitrogen levels.

3. It supports production of hormones.

4. It speeds up recovery from injury or overtraining.

Although lysine can be readily obtained from many foodstuffs, supplementation can enhance effects noted above. No problems have been reported with normal usage but high doses exceeding 15 grams can cause stomach problems and cramp.

1. Pectoralis major - these are large chest muscles found to either side of breastbone. Its main job is to bring upper arm inwards across body, a movement that is known as horizontal adduction.

2. Latissimus dorsi - this is largest back muscle that runs from lower back to upper arm bone. It pulls upper arm towards body and acts as an internal rotator of upper arm.

3. Trapezius - this muscle runs from mid spine to shoulder and then to neck. Its main role is to faciltiate movement of shoulder blades.