hgh is called growth hormone, which is a protein secreted by the pituitary gland and is a peptide hormone. It has many benefits for human health, mainly including the following: 1. Enhance the body’s immunity and reduce the chance of infection: mainly by restoring the atrophied thymus gland hyperplasia to its original size and producing immune cells to enhance immunity; 2. Enhance and restore memory: hgh can promote The proliferation of blood vessels in the brain, so that memory is strengthened; 3. Improve the quality of sleep: it can promote the secretion of pineal gland hormone.