Sit up, lift your legs, bend your knees to the left and right, and keep your feet close to your body; Stick the soles of your feet together and grasp the soles of your feet with your hands; The ischium sinks, lengthening and straightening the spine; Inhale, lengthen the spine and feel the energy line extending from the top of your head; Exhale, tuck your hips, lean your upper body forward to the ground, and keep this position for up to 2 minutes.

Repeat this exercise 2 or 3 times.