It does not increase testosterone directly but stimulates pituitary gland to produce more LH or Luteinizing Hormone, which in turn makes your testes produce more testosterone. It's great for enhancing your libido or sex drive. As a matter of fact, it can help you perform like a stud in bed! The endocrine system is really a band of glands that regulate our bodies with hormones. The glands are ductless, in order that they release hormones directly into the bloodstream. Hormones are chemical messengers which have specific targets called receptors. There are three kinds of hormones: steroid hormones, amino acid derivatives, and peptide hormones. The concentration of hormones inside bloodstream is regulated through feedback loops.