I take a deck of cards and write a different letter on each card, including the following excercises: Burpees one legged jumping squts jumping squats regular squats ab (sit ups/crunches) core (plank) push ups 1-2s jumping jacks mountain climbers shadow box spiderman lunges and throw in a few rest cards according to desired intensity of workout. using a timer, each card's excercise is done for 30 seconds, moving immediately to next workout without rest. Add 5 secs to the workout for increased intensity. Its a good, unpredictale workout that can be done anywhere and imo simulates a fight pretty well. I got this idea from a ross article which had a similar workout involving squats, sit ups and push ups. Whaddya think?