1, back step+arrow squat+front foot jump kick.
2, dumbbell weight+feet squat jump.
3. Bend your front foot and lift your legs.
4, full squat+feet alternately walking back and forth.
5. Weight dumbbell+one-legged jump.
6. Weight-bearing dumbbells+alternating feet+jumping.
7. Alternately squat on one foot.
Squat below 8.90 degrees.