The frog should be close to the ground when crossing, and the body should be upright when lying down.

1. Frog stride: The thighs and calves are at a 90-degree right angle, the knees are parallel to the hips, and the heels are as close to the ground as possible. Teachers and family members can help push the butt down. The highest level of frog crotch is touching the ground.

2. The frog lie is mainly to improve the shape of the calves and legs and open the hips. After the hips are opened, the pelvic position will appear petite and stylish. It must be done at two 90 degrees, the thighs and the body are 90 degrees, and the calves and the body are 90 degrees. Thigh 90 degrees.