Lt. Cmdr. Chris Bonner let us into his home gym in Virginia to shoot Bob Thomas' next Military Muscle workout.
Bonner, a Coast Guard aviator who has been coaching CrossFit since 2008, is also a Military Muscle alum. His first appearance in OFFduty was for this brutal workout from Bob.
This time we were a little easier on Chris, only asking him to tackle Bob's crunch-less -- but still tough -- core workout.
He of course crushed it.
Get this workout in the July 8 issue of OFFduty, on newsstands July 1.
Do you want to be in an upcoming issue? Here's how.