Between feeds, naps and nappy changes, this new Dad gave himself a whole new challenge, and it yielded some surprising ...

Sit-ups target your abdominal muscles, back muscles, and hip flexors, while crunches only target your abdominal muscles. • ...

Sit-ups often come to mind when you think about working your abs or strengthening your core. It’s one of the most old-school, well-known exercises for ab-shredding, but recently, it’s become less and ...

The main difference between sit-ups and crunches is the range of motion involved in each exercise. Sit-ups require you to lift all the way up, while crunches require a slight lift off the ground.

Think the fitness tests you did in gym class were tough? The U.S. military has been putting its service members through the ...

A major change to fitness tests throughout the military has been the substitution of plank poses for sit-ups or crunches. This can be a challenge, especially if you had been doing two minutes of ...

Fitness in 4: No sit-up abs Even if you don't want a six-pack, it's important to have a strong core for mobility. Elite Fitness Professionals CEO Joe Hunt shows us how to work on those abs - with no ...

The Army’s physical fitness test has remained unchanged for some 40 years: two minutes to do as many push-ups as possible, then two minutes for sit-ups, then a two mile run. Recruits need a certain ...