This workout was amazingly difficult. I'm used to running for hours - and sort of scoffed at the short duration of this workout. By the last 10 minutes I was thanking the Lord that it was almost over.
The warm up was 10 minutes of running in place, jumping jacks, Heismans (tires), and butt-kicks. It starts out slow and you repeat (hence "circuit") going faster each time. Following the warm up - which had me drenched in sweat - was 10 minutes of stretching. Oh what a relief! I've never done stretching that far in to a workout, but it was welcome!
The rest of this workout is just as it sounds. Repeating circuits of plyometric moves (squat jumps, tires, jumping jacks, butt-kicks, burpees, prison cell push ups) all done for two minutes with a 30 second break.
I pushed myself so hard. I can't imagine trying harder. I've run for hours on end and NEVER pushed through pain like this. In the last 10 minutes I nearly cried, but I didn't quit. I was so glad when this was over.