Strengthening back muscles is important for the formation of a beautiful posture, as the strong back muscles support the spine and stabilize the trunk and protect the back.
No-developed back muscles is impossible to train the legs with full force, as many basic exercises on the lower body (squats, for example) is highly loaded and back.
A professor Kyupersa. In clinical medicine there are cases of the use of intravenous solutions of arginine and ornithine in testing reserve in human growth hormone. Steroids are a family of lipid molecules that includes cholesterol, steroid hormones and bile salts.