Place your hands by your temples, with your elbows pointing out to the side. Lift your left knee, and at the same time, bend ...

Let's dive into the essential technique for performing the perfect crunch. You'll learn step-by-step how to execute this ...

We're going to use an ab ball and a floor mat. Make sure you have enough room to spread out. Let's start with a waist crunch. Have a seat on the exercise mat. Now, what I want you to do is lie back.