Tighten my tushie

Here's the workout:
10/50 Intervals

1. Run the stairs
2. Prone hip extension (lying over a chair or bench, hips resting on chair, engage abs and lift legs to as high as comfortable and hold then repeat)
3. Squat jumps
4. Facedown hip external rotation (bend right leg, knee pointed out, resting on floor, place foot on the back of opposite knee, keeping both hips on floor lift knee a few inches and lower, repeat)
5. Other leg
6. Run the stairs
7. Wall squat - back up against wall lower to squat position and hold
8. Lunges with high kick - left leg
9. Lunges with high kick - right leg
10. Glute bridge march - on back with knees bent, feet on floor, raise hips to bridge position, engage core and lift left leg bringing knee to chest, lower and repeat on other leg alternating
11. Squat jumps
12.  Single leg plank - plank position, lift and lower leg, alternating
13. Run the stairs