That depends on what dance you want to learn. Every dance has different requirements. I suggest you don't learn ballet, folk dance, classical dance, China dance (I know it well) and so on. These dances pay more attention to basic skills. You are now 16 years old, and your bones and muscles are hard. It is difficult to practice basic skills now.

If you want to learn dance as an interest now, no problem. There are many dances regardless of age (basic dances don't need much). I suggest you learn Latin dance, modern dance, street dance and so on.

But if you really want to learn dance, you must work hard! Come on!