The basics of a killer ab workout. The most important thing to remember is to grasp form, so, meaning you want to engage your core, but you don't want to compensate by using your lower back. So to speak, which is also known as arching your back. So the basics of a killer ab workout would be definitely, master the form in every exercise first. Take it slower, use it modified. Whether it's your hands in front or, if you want to make it a little bit more challenging, you can place your hands in back of you, but that's always more of like a level two. So I would always say grasp the concepts of the basics first and that's going to dictate you know, your core and seeing the results a little faster. And you know, you can actually feel comfortable that you know you're doing the exercise correctly because you're feeling the movement specifically in either the lower, upper, or oblique region of the abs. So you'll know you're doing it correctly if you feel it just in your abdominals. Not in your lower back. So the basics of a killer ab workout is keep the repetitions high, but also, more importantly, your form comes first.