A state of physical and mental health allows you to take part in exercise comfortably and enjoyably so that it doesn't hurt, so that you can look forward it ,and feel good afterwards.(一种身心健康的状态让人们 轻松愉快的参加体育锻炼 而 不致伤及身体，人们因此乐于锻炼 ，锻炼之后能够开心至极，感觉良好) if you are feeling down,sports may help pick you up.one review of past sutdies foun...
