You can use your keyboard to see the next slide ( ← previous, → next)
This total-body move engages your core (not just your abs) best, says Linda LaRue, a registered nurse, athletic trainer, and creator of the Core Transformer. "Moves that involve trunk (your core) twisting best engage your transverse abdomens (the deepest muscles)."
To do it: Stand with your feet hip-width apart, shoulders down, and your abs drawn in. Hinge forward at your waist and inch forward, walking with your hands into a top-of-the-pushup (or plank) position. Hold plank for three seconds, being sure to keep your chest lifted and your belly button drawn into your spine. Your body should form a straight line from your ears to your ankles. Then, perform one pushup by bending your elbows to the sides and lowering your body towards (but not touching) the floor, maintaining a straight spine.
Straighten back up to plank position and twist your torso to the right, reaching your right arm up to the ceiling, into a side plank position. Hold for three counts. Repeat the pushup and side plank to the other side. Then, walk your hands back to your body and stand up tall to start position. That's one rep. Repeat 6 times.
20 top fitness experts reveal their go-to move for a flat, sexy stomach.
20 top trainers reveal their go-to move for a tight, toned tummy.
Trainers Reveal: The Best Abs Exercises of All Time