Directions: Repeat this circuit three times. In the running segments, run as fast as you can. For the strength-training exercises, jumping lunges (aka split squats) and push-ups, try to increase the number of reps per minute by one with each circuit. Trying to best yourself in each round will help keep the intensity up.
|Jumping lunges||60 seconds|
Simple, right? But probably not easy. Looking for a little more inspiration? Bob sells this workout like this: "With this workout, you will run over a mile, at the highest speed that you can, and then incorporate body conditioning without any equipment but a good pair of running shoes." Are you inspired to try it?
Photo courtesy of NBC