If you've been trying to crunch your abs to perfection and not getting anywhere, my No-Crunch Ab Workout may be your ticket to getting results.

Researchers at the Biomechanics Lab at San Diego State University recently tested over a dozen popular ab moves and gadgets to see how they stacked up in terms of muscle usage, safety and efficiency. The result? Crunches finished somewhere near the bottom on the list of useful ab exercises.

I've designed three routines that include exercises the San Diego State University study deemed most effective with a few other good moves for variety.

There's a beginner routine for those just starting out, an intermediate routine for those who are ready for more, and an advanced routine designed to challenge the lucky few whose tummies are already rock hard. The routines are progressive, meaning a more difficult version of a beginner exercise may appear in the intermediate or advanced workout.

As you advance through these three routines, you'll be able to see and feel the progress you're making. And best of all, there's not a crunch in the bunch!

More No-Crunch Ab Workout

• Basic Guide to Abs
  
• How to Make the Most of Your Ab Training
  
• Beginner Routine
  
• Intermediate Routine
  
• Advanced Routine