@vrwcaj sounds like I hit a nErVe. Your aversion to the idea assures me that’s what you need.
joining the gym and exercising is a great hobby. It can improve your body, confidence, and friend group. Not only that but as you transform yourself others will notice and want to be like you. It’s a type of revenge on people talking about you. Consistency is the key, 45min to 1hr, 5 days a week. The gym will usually have different classes so you can exercise in a group.