Complete 32 intervals of 20 seconds of work followed by ten seconds of rest where the first 8 intervals are pull-ups, the second 8 are push-ups, the third 8 intervals are sit-ups, and finally, the last 8 intervals are squats. There is no rest between exercises.
Use 25, 45, or 65 pound dumbbells. Use one of the C&J dumbbells as the load for the weighted pull-ups. Placing the dumbbell between legs crossed at the ankles works very well.