Make friends in after-school sports or clubs.
This will help you engage in activities you like as well as be in a supportive environment of like-minded people, which can reduce susceptibility to peer pressure.
Tbh if I was in this situation I would stay for half of the movie marathon and head to the gym for my daily exercise routine. But the HEALTHY choice would be to skip the movie marathon and go exercise.
Hope this helped!
Let me know if I was wrong.
An individual center of gravity is usually found A. Just above the belly button.
Hope I could help! :)