The good news? You can ramp up the challenge with various sit-up variations that target different parts of your abs, from ...

There are many sit-up variations that can help you achieve your weight loss goals, as well as keep your fitness regime interesting. They engage multiple muscle groups, including the core ...

the best sit-up variations, sit-up workouts and some frequently asked questions. Pull up your mat and hit the floor. Before we nail the sit-up technique, let's take a look at the muscles worked.