Abdominal wheel how much to do a day, varies from person to person. Poor physical condition of a day less do some, good physical condition, a day more do some. But should be gradual, starting with a few, slowly increasing, increasing to do 3 groups a day, a group to do 10 to 20 can. First practice kneeling, and so familiar with the practice, practice easy, and then practice standing, because the standing type is more difficult, the whole body needs to coordinate the movement of many muscles to complete, otherwise easy to injury. For some people with good physical quality and strong coordination, you can practice back stretching style, which is particularly effective.