The classic sit-up is a workout staple. Whether you learned how to do the movement in gym class or from watching a Rocky training montage, you've probably performed more than a few sets over the years ...

Sit-ups can cause nausea if you experience dehydration, develop heat exhaustion, or participate in prolonged high-intensity workouts.

While classic core exercises like sit-ups and crunches are certainly an effective way to train your abs, they are not the only way. If you prefer to stay standing for your workouts, then this ...

If you do want a stretch, cross your arms in front of your body, then pull your arms back behind you as far as possible. At ...

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 ...