Here's a list of 5 common myths about abs.

Myth 1) You don't need to watch what you eat

Diet
is first and foremost the key factor when trying to get 6-pack abs.
Plan your nutrition in advance, to avoid dietary downfalls.

Myth 2) As long as you do a lot of ab exercises and repetitions, it doesn't matter how well you do them

It
is important to do all repetitions with good form. Focus on quality,
not quantity. Avoid sit-ups and an excessive number of crunches. Both
exercises can damage the lumbar spine in your low back, and crunches
are rarely effective anyways.

Myth 3) You can "Spot reduce" the fat on your abs with crunches

No
matter how many crunches you do, you won't be able to get rid of your
ab fat with crunches alone. You need a good diet and an increase in
your calorie burning from strength training and interval training.

Myth 4) Infomercial products will help you get a 6-pack

You've
probably seen dozens of ab gadgets on TV, but none are magic bullets.
You can't expect anything you order from TV to help you get a 6-pack.
You have to do the hard work with nutrition and training to get
results.

Myth 5) You must do abs every day

You
don't need to do abs every day. Instead, train them twice per week and
use non-conventional exercises such as Mountain Climbers and Stability
Ball Jackknives to reduce the stress on your low back.

Craig Ballantyne, CSCS, MS
Author, Turbulence Training