If you hate to exercise the last thing you want to do are exercises that are 1) boring and 2) don't really do much for you.  That's why we're asking some top trainers and coaches to share their absolute favorite move ever (or the one they're just really digging right now).

Laura Tarbell is a certified personal trainer, STOTT Pilates trainer, and the founder of TarbellPilates.com. Her DVDs include "Pilates for Runners," "Ultimate Abs and Core," and "Plyo-Pilates."

Name of Move:  Plank Twisters

"This is a total-body move that trims your waist!" says Laura. It's particularly effective at working a variety of abdominal (belly/core) muscles, she adds, including the obliques, transversus abdominus, and rectus abdominus, as well as your shoulders, erector spinae, latissimus dorsi, and pectoralis major.

Try to do 3 sets of 10 to 15 twists to each side, or start with 1 or 2 sets and build up from there.

Skip the Plank Twisters if you can't hold Plank (if you're not sure what Plank is or how to do it, click here.)

How to Do It

Begin in Plank position on your forearms and toes. Your feet should be hip-distance apart.

Start in center in Plank on your forearms.

Start in center in Plank on your forearms.

Exhale to rotate your hips to the right to touch the right hip to the floor.

Hips dip to the right.

Hips dip to the right.

Inhale to return to center. Exhale as you rotate your hips to the left. Then inhale to return to center. Keep elbows on the ground throughout the move.

Hips dip to the left. Your feet will naturally stagger as you move from side to side, as shown above.

Hips dip to the left. Your feet will naturally stagger as you move from side to side, as shown above.