The most effective way to tone and strengthen your abdominals is also a breakthrough in exercise science.
The crunch is dead. Lou Schuler, co-author with Alwyn Cosgrove of The New Rules of Lifting for Abs
(Avery, 2010), hasn't done one in 10 years. "The idea of doing crunches
and sit-ups is to make the abdominal muscles bigger," he says. "But we
all have muscles there. My son had a six-pack for most of his childhood,
without doing a single sit-up. He was just a skinny, active kid." It's
not breaking news that diet (ditch the sugar and refined carbs) is more
important than exercise if you want a torso that looks like a box of
steaks. But most guys probably don't realize that the most effective
moves for chiseling the rectus abdominis aren't crunches or
sit-ups—which can actually do more harm than good. How can that possibly
be? Consider this: The best exercise to target your gut does the exact
opposite of a crunch.
From the Editors of Details
According to a study published in the Journal of Orthopaedic & Sports Physical Therapy
in May of last year, the Swiss ball rollout, in which you place your
fists on a ball and extend your body like a bridge, is much better than
the crunch for creating a ripped stomach and building strong lower-back
muscles to support your spine.
But
the rollout isn't some newfangled exercise invented in a laboratory;
it's simply a dynamic tweak of the plank, one of the oldest exercises in
the book. In a crunch, you bend your spine. In a plank, you brace it.
That makes all the difference. Exercises that stiffen the abdominals
generate greater forces in your hips, which allows you to move with more
explosiveness and efficiency. They also make you look better. A pair of
studies from 2006 and 2008 show that moves like the rollout work the
upper and lower abs about 25 percent more efficiently than a crunch or a
sit-up. How's that for maximizing your gym time?
And
thanks to Stuart M. McGill, Ph.D., an influential kinesiology
researcher at the University of Waterloo in Ontario, we now know that
crunches do a number on your spinal discs, parts of your body that do
not heal. McGill measured the forces placed on the spine by sit-ups and
crunches. He found that the compression created by a crunch is so high
that if you knocked out a set on the job and the Occupational Safety and
Health Administration was there to measure the load, your employer
could be charged with violating workplace-safety laws. In other words,
if you're looking for a herniated disc, look no further than the crunch.
The
basic plank—toes and forearms on the floor, shoulder blades pulled and
down, butt down, body straight—is harder than you might realize. But
once you can hold it for 60 to 90 seconds with ease, move on to a more
challenging version of the classic. (The exercises are organized in
ascending order of difficulty.) Do them in front of a mirror so that you
can monitor your form, and be sure to break when it goes off.