2, the circle should be big, not too thick. (It's better to deduct the three of you. )
You should practice holding your breath and vital capacity first, and take a deep breath when you turn (where can you breathe when you turn).
4, "ma bu" or horse stance just look should stand firm, and it is best to have a posture when turning. (Otherwise, the hula hoop won't turn, and people will stagger. )
5, the ass should be upturned, otherwise the hula hoop will not fall? This requires more practice, which is the most difficult.
According to my five essentials, you must turn around, so fast that you are afraid of yourself!