I like playing with my nipples. I undress when I come home from school every day. I am not afraid of catching a cold. I began to pinch my tits and shake them. Is it dangerous?

Hehe ~ so there is no danger. Learn to appreciate your body, which is what every normal person will do. Sometimes doing some breast massage is very helpful for development and increases elasticity. In a place, it is good that the whole body blood can flow normally. Of course, the downside is that you should pay attention to hygiene first. In a wholehearted release, it was a good performance. Don't have any worries, and don't need to worry, hehe!