This Simple, Effective Ab Workout Will Shred Your Six-Pack

Take on this super quick triset of of abs-defining exercises from trainer Charlee Atkins, C.S.C.S. for a better core workout. It's great for any type of exerciser, whether you're a seasoned workout warrior or just getting into the gym for the first time. Atkins swears by it as more than just an easy prescription for the people she works with-she does the moves herself, too.

"Nine times out of 10, this is the ab routine I use, and I give to all of my clients," she says. "It's easy to modify to all athletic levels, and it's, of course, a killer ab routine."

To take on the core series, you can try it with or without an added load. You can use anything to add weight-dumbbells, kettlebells, sandbags, or even just a heavy object you have laying around. Either way, you'll probably want set up shop on a yoga mat for your back. Check out this option from our Backslash Fit brand if you need a solid one for home.

Perform each exercise for 20 reps each with little to no rest

Tip: Keep the arms reaching for the ceiling the whole time

Regression: No weight; traditional situp; classic crunch

Tip: Bring the elbows to the knees. Extended position is a hollow body hold.

Regression: No weight

Tip: Try to keep legs as straight as possible with lower back pressed into the mat.

Regression: No weight

Take on the series for 3 to 5 rounds with minimal rest. Want to learn more moves from Atkins? Check out our series full of her workout tips, Try Her Move .