People can live longer by being physically more activity

We all know being physically active is good for you.But do we know how good? People can live up to 3 years longer,even with as little as 15 min of physical activity a day,according to last October’s report by Wen and his colleagues at the China Medical University in Taiwan,China. Many researchers in the field of sport and health sciences know being physically active can bring many benefits to one’s life.But this message has sometimes been disseminated using a negative tone.So much so,Bortz of California,USA,has