Daily, vigorous exercise helps kids get or stay fit

By Kathryn Doyle NEW YORK (Reuters Health) – A nine-month after-school exercise program helped young kids lose body fat and improve heart and lung strength compared to kids who didn't do the program, according to a new trial. It's clear that activity is good for kids, lead author Naiman A. Khan told Reuters Health. "We saw their overall body fat, abdominal fat go down, and in the absence of the …