BOSTON (CBS) ---Friends and former colleagues of fallen firefighter Michael Kennedy, turned out for a CrossFit workout in his honor, Sunday. The event was run by two Boston firefighters who work and ...

A U.S. Air Force F-16 Fighting Falcon fighter aircraft assigned to the 18th Aggressor Squadron takes off from Eielson Air Force Base, Alaska, Oct. 6, 2014, during RED FLAG-Alaska 15-1. RF-A is a ...

If you’re just starting to explore the world of CrossFit, or spotted the elite of the elite at the CrossFit Games on your social feed recently, you’d be forgiven for feeling somewhat intimidated.

CrossFit’s popularity among service members and veterans is no secret. Love it or hate it, troops know that the functional fitness program takes seriously staying connected with the U.S. military.

Add Yahoo as a preferred source to see more of our stories on Google. Maximum heart rates, strength building workouts and intelligent programming are all promises CrossFit make, so if even if you're ...