Scientific research has been able to prove that addiction is a brain disorder. As the American National Institute on Drug Abuse defines it, addiction is "a chronic but treatable medical condition involving changes to circuits involved in reward, stress, and self-control". Thankfully "more and more doctors and policymakers are recognizing that punishment is an ineffective and inappropriate tool for addressing a person’s drug problems and that treatment is what is needed". For
Peer reviewed research shows that exercise not only causes immediate increases in levels of key neurotransmitters, including serotonin, noradrenalin, dopamine and endorphins which mediates stress, and that it improves our ability to shift and focus attention, it now suggests that increased levels of physical exercise can result in improved memory by enhancing both the birth rate and the survival of new hippocampal brain cells.
Studies done by Dr Wendy Suzuki of New York Uni