英语翻译Studies have shown that people who engage in the amount
英语翻译
Studies have shown that people who engage in the amount of exercise recommended by the feds live an average of three to seven years longer than couch potatoes,according to William Haskell,a medical professor at Stanford University who chaired the HHS advisory committee.But how exactly does exercise accomplish this?And what about claims by naysayers that exercise not only isn't healthy but may actually be bad for you?Is there any truth to them?