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.
Tabata interval workouts are all the rage these days, and for good reason. This high-intensity training is fun, blasts calories, and moves so quickly that it's hard to get bored. For Tabata, you perform an exercise at maximal intensity for 20 seconds, followed by 10 seconds of rest. You repeat this on-off pattern a total of eight times, making one complete Tabata round four minutes.
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!!!