Add Yahoo as a preferred source to see more of our stories on Google. Your favorite ab-building machine at the gym may be causing you more harm than good. That's right—we're talking about the torso ...

A CSCS trainer shares 5 standing exercises that work your core and build full-body strength after 60. No ab machines needed.

With each year that passes, I really don't notice any "noticeable" decline in my movement efficiency or strength. I cruise through most weeks with three or four workouts and pretty much keep trucking.