Sit-ups are a classic ab exercise that requires a lot of core strength. Here are 6 variations of sit-ups to do for a flat belly.

Need mid-week inspiration? Here is a push-up video that you might find motivating, featuring a woman doing push-ups of not one, two of 10, but 30 variations.

Both sit-ups and crunches can help target your core muscles, but there are key differences between the two ab workouts.

If you are seeking a military or law enforcement job, you likely will see an entrance exam that requires you to score well in sit- ups or crunches.

You don't need sit-ups to build a strong core, just try this five-move dumbbell abs workout designed by a Hyrox age group world champion.

Sit-ups are the full range of motion as you lie on your back with bent knees, hands behind your head and then raising your upper body to your legs using your core.

The sit-up’s downfall is largely due to fitness professionals realizing the limitations and potential risks as well as identifying more effective and dynamic exercises. The post Sit ups are ...

FBI Everyone gets a minute to complete as many sit-ups as possible — a momentary pause means the test is over. At least one point must be earned in the sit-up portion of the fitness test.

Those with flabby tummies have probably heard lots of tips about the perfect sit-up. A Medical College of Georgia study has determined that no sit-up is perfect for everyone – but there are lots ...

Experts at the fitness website Topend Sports say that sit ups are a good measurement of muscular strength and endurance. The exercise engages multiple muscle groups.

Core strength testing has come a long way from the straight-legged, twisting sit-ups used before World War II.