In the 21st century, it seems a common belief that the body can handle the abuse that comes with extreme sports, but Dr Steve Barrer argues that this is a mistake. While a culture of exercise exists across the Western world and the idea of no pain no gain' is preached as gospel, medical concerns can be overlooked. Barrer wants to make sure that young people don't get the wrong idea from the model that's been set: no, your body is not invincible and yes, exercise can truly hurt you.'