Too much exercise a bad thing? Too much high-impact physical activity can leave teens at risk for stress fractures

Exercise may be good for the body, but too much of it may be bad for the bones. Teenage girls who participate in high-impact physical activity — such as basketball, running, gymnastics and cheerleading — have a higher risk of developing stress fractures, according to a report in the online edition of the Archives of Pediatrics & Adolescent Medicine. read more