The simplest way to increase the difficulty of sit-ups is to add some weight. You can add a dumbbell, kettlebell or sandbag.

When most people think of a strong core or achieving abs, the first exercise that comes to mind is often sit-ups. While sit-ups have long been a go-to for strengthening the core, they're not always ...

Your abdominal muscles are resistant to fatigue, according to the IDEA Health & Fitness Association, a membership organization for fitness and wellness professionals. As part of your core muscles — ...

The classic sit-up is a workout staple. Whether you've become all too familiar with the movement in your weekend HIIT class or eked out those last few reps while following a home workout video, you've ...

What are sit-ups, and why are they a high-risk exercise? An abdominal endurance training exercise, sit-ups help strengthen, tighten and tone the abdominal muscles. It is often done by gym-goers who ...