Squeezing your abs is the secret behind getting sexy abs fast. It allows you to be efficient, by focusing on the right body part. It’s easy to do an abs workout where you use your bodyweight to do most of the action. Instead, you want to focus on squeezing your abs. This will tone the right area:

Since 15 minutes to do abs is a short time, you must focus on squeezing to get the job done. If you don’t squeeze the area you’re working, it’s likely to be a less effective abs workout.