One Newton, Iowa, man liked doing sit-ups so much, he decided to break a world record. In 1985, Kenny Kirk, 24, did 31,111 sit-ups in just over 21 hours, beating the old record by more than 1,000. His ...

Hafthor "The Mountain" Björnsson has lost 121lbs and now has shredded abs. Core training is particularly important for him right now as he embarks on a boxing career. Björnsson told Insider he does ...

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 ...

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 ...

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 ...

As a fitness editor, I love that deep core shake you get after a minute-long plank. That said, if I’m in a busy gym, or I’m taking my workout outside now the weather is nicer, the chances are I’ll ...

Think you can stomach the FBI’s sit-up test? The FBI accepts applications from people between 23 and 37 — though veterans may qualify for an age waiver. Besides a background check, applicants must ...

Superhuman Troy shares results after doing 1000 push-ups for seven days. US Secret Service agent put on leave for 'karma' ...

If you can’t keep up, sit this one out. The Central Intelligence Agency is seeking candidates for an “executive protective agent” role who are patriotic, trustworthy and, most importantly, fit enough ...

Mastering push-ups and pull-ups requires progressing from building strength to developing muscular endurance. Conquering your first repetition of these calisthenics exercises is a matter of strength, ...

DENVER — More than 1,000 women flocked to the Colorado State Capitol in the first light of dawn Monday with the weighty goal of ending gun violence in the U.S., one state at a time. Mothers in workout ...