Tap is actually quite difficult and requires a high degree of skill. jazz is very energetic, and it certainly is fun. if you want something just for fun and for good exercise, i would suggest something that would be energetic and boost confidence, like salsa, or similar styles. some of the moves are provocative, but in a controlled environment so its completely safe. of all the dance classes i've taken, i've loved the salsa class the best! as for ballet, its extremely difficult and causes awful feet which dont look pretty when wearing party shoes! so i personally would avoid it! all the best x