A new research reveals how much exercise teens need to be healthy, and it's not as much as you think.
Kitty Barulis, 13, does non-stop 20-yard shuttle sprints for a health check.
She claims it was tolerable.
So say Oxford researchers. New research shows youngsters benefit from 20 minutes a day of heavy breathing and red faces.
Oxford Brookes University PhD student Sam Burden researched.
"We urge that kids start exercising at high levels today."
"You must become hot, sweaty, and breathless, but just for 20 minutes a day."
Teenage guys exercise more than girls, according to researchers. Pediatrics released the results this month.