Physical exercise: push-ups, sit-ups, pull-ups, sitting/standing forward, etc. Balance exercise: handstand; Flexibility exercises: pulling ligaments, opening shoulders, etc. Basic rhythm: music, up and down, etc.
If you want to dance street dance, first of all, we need to exercise every day to relax our muscles, so that we can have better flexibility. At school, we can go running in the playground, sit and stretch, and start by exercising our flexibility.
Beginners should first know that there are many kinds of street dance. At present, there are HipHop, Breaking, Popping, House, Jazz, Raggae, Punking, Krump, Locking and so on. But no matter what kind of dance needs love and perseverance, age, height and thinness are not too big a problem.