Having just completed the Timesaver Rotation for a month, I'm pretty familiar with all these workouts.
Timesaver #1 Warm-up 5 min. Step Aerobics 16 min.
Timesaver #2 Warm-up 6 min. Step Aerobics 10 min. Hi Lo 10 min.
Timesaver #3 Warm-up 6 min. Step Aerobics 20 min.
Timesaver #4 Warm-up 7 min. Kickboxing 25 min.