Exercise and nutrition will all cause muscle growth. They contain BCAA’s such as leucine, valine and isoleucine. It is consumed immediately after workout when the muscle mass requirements energy for recovery and development. 2. Whenever your muscles contract during workout they use ATP as their energy source. In this process ATP is changed into ADP . Creatine supplement is used to replenish these energy stores. That is why creatine is so well-known to bodybuilders and athletes.The debate over whether spanking children is suitable as a disciplinary tool for parents or whether it’s violence against kids can be heated and ongoing. Although spanking was a recognized type of discipline for previous generations, attitudes have shifted. Related StoriesStudy explores relationship between mental health insurance and parentingPoverty and parenting design predict childhood obesityHormone decline provides window into guys's parenting abilities So heated is this debate, and so long-running, that the issue of whether spanking is morally ‘right or wrong’ is probably intractable, writes Dr.