Musclemania® Pro Marius Florentin says, "One of the most common questions I get asked is, ‘How often do I train abs and what are my favorite exercises to do.' The answer to the first part of the question is really simple. I train abs every time they don’t feel sore, that could be 2 times a week, 3 or even 4. It only depends how fast you recover. My favorite exercises to do are weighted rope crunches or at a machine like this one, hanging leg raises and plank. There are many other variations and exercises that I do, but I always pick one of these 3 and combine them with other exercises."