Ascending Body Squats, Push-ups, Pull-ups, Sit-ups

For time:
25 Squats
25 Push-ups
25 Pull-ups
25 Sit-ups
50 Squats
50 Push-ups
50 Pull-ups
50 Sit-ups
75 Squats
75 Push-ups
75 Pull-ups
75 Sit-ups

As Rx'd: 21:45