Add Yahoo as a preferred source to see more of our stories on Google. When trying to reduce body fat and get in shape, many of us head straight for the nearest full-body mirror and lift up our shirts ...

Sit-ups alone won't cut it if you want a comprehensive core workout. Luckily, we've chatted to expert trainer Britany Williams to serve up a routine that will strengthen all of your crucial mid-body ...

Core training has always been part of military PT and fitness testing. From crunches to sit-ups, flutter kicks, leg tucks and plank poses, the U.S. military uses many exercises to test core strength.

Fast, effective, and no basic movements.

Jakob Roze, CSCS, is a health writer and high-end personal trainer. He is the founder and CEO of RozeFit, a high-end concierge personal training practice and online blog. Side planks trains your ...

How to use this list: Perform each exercise below in order for 50 seconds, resting 10 seconds between sets. Complete 2-3 rounds, resting a minute between rounds. Prefer going for reps? Aim for 8 to 12 ...