THE CLASSIC SITUP 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 ...

Find out how many sit-ups after 55 signal a strong, healthy core and use this 60-second test to track your strength over time ...

Core workouts can often feel like a slog, especially when the workout involves busting out endless sit-ups or crunches, which can quickly become repetitive and boring. However, this workout from Oner ...

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 ...