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

When most people think of core exercises, they think crunches and sit-ups – possibly because the tactical professions have used them for decades. But given recent changes in military testing, the next ...

The Army plans to toughen its fitness tests for the first time in 30 years to make sure all soldiers have the strength, endurance and mobility for battle, adding exercises ...

Sit-ups and crunches both target your core muscles, but work differently. You can use both exercises to build strength, endurance, and control.