Science is beginning to suspect that longevity does not depend solely on how much we age, but on how well the body is able to recover between one effort and the next. By Ehab Soltan HoyLunes — I have always been struck by the difference between Carmen and Clara. They live in the same neighborhood, use the same…
Read MoreWhy do some people feel exhausted at 40 while others seem full of life at 80?
