It is very necessary to do chair slimming exercise before going to bed every day. First, lie flat on the floor, put your feet on the chair, and your thighs are at right angles to the ground. Put your right hand behind your head and straighten your left hand to the side. Then gradually raise the upper body to form a 30-degree angle with the floor, and twist the right elbow to the left knee when the upper body leans forward. This action is done three times a day for each group 15 times, and the effect can be seen within two weeks.