Two easy moves become NOT SO EASY. My abs are feeling it big time. 3-4 times through. First round, 30 reps of each. Second round, 25 reps of each. Third round, 20 reps of each. Fourth round, 5 reps of each. Good luck! Even if you need to take breaks throughout your sets, go for the full 30/25/20/5 reps. You've got this!

1. Reverse crunches (let your abs do all the work!) straight into...

2. Normal crunches (eyes on the ceiling lifting straight up)

Good luck through all four sets. You'll be feeling it.