1: The body bends sharply, hands are straight, palms touch the ground, legs can't bend, eyes look at the ground, and hold for 10 second.
2. Breathe slowly, straighten your hands, tighten your abdomen, straighten your feet backwards, stand on tiptoe, stretch your neck forward, and keep your whole body level 10 second.
3. Put your feet on the ground, slowly lower your upper body and lean forward at the same time, keep your legs straight, tighten your abdomen, bend your elbows with your hands and keep your arms parallel. Adjust the body center of gravity and keep the body shape in a straight line 10 second.
4. Hold your hands straight, tighten your abdomen, keep your feet straight, stand on tiptoe, hold the ground well, send your body forward, lower body slightly downward, arms straight, and look up 10 second.
5: Relax and lie down, straighten your legs together, put your hands on your sides naturally, and breathe naturally for 5 seconds.
I hope these will help you to become a sharp chin as soon as possible.