Schools encouraged to introduce more sports for girls
2 May 2012 Last updated at 01:51 BST
Schools are being urged to introduce more female-friendly sports like zumba classes and rollerblading because so many girls are opting out of exercise.
New research suggests half of all girls are put off exercise by their experiences of PE lessons.
The Women's Sport and Fitness Foundation said schools should work harder to help children get fit and healthy.
Health correspondent Jane Hughes visited Willowfield School in east London to find out whether its pupils enjoy sport.