It's okay. Don't keep doing this,
When you sit down, your waist should be straight. You'd better put a waist pad behind your back and raise your center of gravity upward, so that you won't put all the weight on your hips and abdomen.
Make your hips fatter and fatter.
Legs together, hands against the wall, legs straight, hips extended outward 10 second, then close to the wall 10 second. Repeat, not only can shape the buttocks, but also have the effect of abdomen, and the lower abdomen will gradually flatten.
It is best to have elastic rope or skipping rope, if not, you can do it empty-handed. First, open your feet and step on the elastic rope with shoulder width, hold the rope on your shoulders with both hands, squat down your hips so that your thighs and calves are at 90 degrees, and stand up straight after standing still for 8 seconds. As for how many times to do it, please adjust it according to your personal situation.
(Hip lift exercise 1)
1. The body is in a kneeling position, with hands open and shoulder-width on the ground.
2. Move the left knee as far as possible to the chest and stop for 5 seconds, then slowly lift it (thigh 90 degrees), stop for 5 seconds and then put it down.
3. Repeat 30 times before changing sides.
(Hip-lifting Exercise 2)
1. Lie on your back, knees bent, hands naturally touching the ground shoulder width.
2. Abdomen in, hip in, lift and inhale, pause for 5 seconds, and then put down the exhalation.
3. Repeat 30 times
(Hip-lifting Exercise 3)
1. Fold your hands and straighten forward at shoulder height (or hold the wall or chair back).
2. Stand with your right foot straight, move your left foot back slightly, touch the ground with your toes, lift your left foot back quickly, and put it down after stopping for 5 seconds.
3. Repeat for 30 times and then change feet.
(Hip-lifting Exercise 4)
1. Lie on your back with your hands and feet straight.
2. Lift your feet together slowly and put them down slowly when they are at right angles to the ground.
3. Stop at a place 30 cm above the ground and stand still 1 min.
PS: Don't leave your back on the ground, don't bend your knees, and don't exert yourself on your shoulders and arms.