Workout Update: 25 Minute Speed Train: Day 48

Day 48 was week 7's core-cardio workout. The format is the same, four blocks with two exercises that you alternate and then a burnout block doing four of the eight exercises for 45 seconds, back-to-back. There are a couple of new exercises in the workout, one new variation of the bear plank and a lunge chop with the dumbbell. Every other exercise is one that has been in the prior workouts.