therapeutic perspectives and could also be beneficial for research on psychiatric diseases or cognitive aging. " is the subject of many mysterious hypotheses. This is particularly the case in sport, where this hormone is a controversial subject. How does affect sports practice, muscle growth and physical abilities in general? Is it possible to increase your level to be more fit, muscular or faster? This article will shed light on the different hypotheses related to and will inform you on this mysterious muscle growth hormone. Note: in order to adequately account for the studies cited in this article, we will only examine what happens within the male body, the subjects studied being exclusively men. TO START: .