You'll begin today with another brief but intense HIIT session including classic calisthenic movements like burpees, jumping jacks, and high knees. If you haven't done the latter two since high school gym class, you might be surprised at how hard they are—especially in the wake of yesterday's leg workout.
Try to arrange your day so that you can hit the gym twice and follow the program exactly as it's written—that's part of the overall plan of the Rewired Trainer. However, if hitting the gym twice a day simply isn't an option, it's OK to perform the workout at home and substitute a comparable activity for the treadmill work. Run stairs for 5 minutes, run a nearby hill, jump rope, or just run in place at a brisk intensity.
Morning: HIIT Cardio Circuit (3 rounds)
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