The most obvious similarity between sport and PE is that they both involve physical activity. Physical health benefits are gained by taking part in regular physical activity, whether that is during school hours ( PE lesson) or playing for a local club
Alessandro forgot to think of the practicality of the lifestyle change. It wasn't practical since he couldn't even get through a week before he had to stop due to something. Instead, Alessandro should ride before or after school so nothing will stop him from making a change.