If you’re looking to train your abs, the good news is that there are a huge variety of exercises that will help you achieve that goal. Even if you’re not doing moves that focus on them directly, the location of your abs means that they are worked hard by compound exercises that hit both the upper and lower body. Your core is also key to any exercise in which you have to keep your body stable, such as static holds like the plank or tricky balancing acts like the single-leg Romanian deadlift.