1, lift the ball and thin the abdomen.
First lie on your back, holding a tennis ball or something about the same size in your hand, then raise your hands to the ceiling, and at the same time straighten your legs together and hook your feet. Then tighten the abdominal and hip muscles, lift the shoulders and head, a few centimeters from the ground. The point of this action is to ensure that the ball always rushes to the roof, not forward.
2. Lift your knees, thin belly.
First of all, you should find a strong chair, then sit on the edge of the chair, bend your knees, and keep your feet as flat as possible on the ground. Then tighten your abdomen, let your body lean back slightly, and then lift your feet a few centimeters off the ground.
3, sit-ups and thin abdomen.
The effect of sit-ups in thin belly should be better, but the method that Mermaid wants to introduce is a bit special. First, lie down and bend your knees, and hook your feet together to the bed. If there is no bedside, then find another way. Anyway, the principle is similar. Then wrap a towel around your neck from behind and pull one end with your hands.
4, slim the abdomen.
This doesn't mean that you are really pedaling a bike, just lying on the floor or bed and pretending to pedal an imaginary bike. I believe many friends have done this action, that is, first press your back on the floor, then put your hands behind your head, and then raise your knees at a 45-degree angle so that you can pedal your bike.