Today is cardio. Instead of steady state (think jogging) i prefer to do shorter periods of more intense work. It's not quite HIIT, or high intensity interval training, but i keep the reps high and the rest periods short.
I chose 2 handed kettlebell swings. I completed 4 sets of 25 reps with 35 pounds. Strict one minute rest in between sets. Duration was 6:00.