Trainers emphasize a variety of moves, but for goodness sakes, don't do a crunch.
Messi's hair or Ronaldo's abs? We asked Will Ferrell
I would not try this.
One quick workout can test even the most sculpted six-pack.
You've never tried an abs workout quite like this.
Tone your abs and strengthen your core without killing your free time.
This is one of the best exercises for your core, except for one thing: It's painfully boring.
this is a vary unique way to workout
You may not even know that you're sabotaging your efforts in battle of the bulge.
Dynamic contraction has a big impact on muscle growth, according to a fitness expert.