11 Butt-Kicking Tabata Exercises: Tabata Protocol is a system of short, high-intensity intervals developed by Japanese professor Dr. Izumi Tabata to train Olympic speed skaters. Grab a stopwatch, because this workout method is all about timing.
Insanity Workout - Do each of these 6 moves for 1 minute without stopping between exercises. After you've completed 1 round, rest for 60 seconds, then go again. Perform the circuit 3 times (20 minutes & done!) 2 days in a row. Take a rest day & repeat.
CrossFit Mamas- blogger who is a mother of 4 decided to do to cross fit as her husband has done for years... within 5 months she was in the best shape of her life and these workouts were done within 15/20 minutes 4-5x/week! She altered the workouts to be done at home and for the females!!!