1, if you want to defend yourself, you'd better practice Taekwondo, which is more common and easy to use. Judo is professional, and it is impossible to be strong without practicing. Unless you play, both of them have almost no slimming effect.

2. Taekwondo is not very difficult, but it requires high flexibility, because in future study, you can't play very standard without good flexibility, but if you want to defend yourself, beauty is not very important, just hit the key. Teenagers' learning has advantages and disadvantages. Advantages: Teenagers are well developed and have enough physical coordination and strength. Disadvantages: Flexibility may not be as easy as that of children.

3. It is best to study in some regular gyms/Dojo with complete facilities, good environment and excellent teacher resources.