The benefits of physical exercise in the mental health are widely accepted. The neuroanatomical substrates and neuromediators that support this statement have been analyzed by several studies. However, this book focuses on the serotoninergic system activation during physical exercise, mainly because disorders in the serotoninergic neurons are involved in several mental illnesses, such as anxiety and depression. Thus, this book presents the main concepts of physical exercise and its health benefits, besides reviewing the serotoninergic system in the central nervous system. An animal...