crunches doesn't gives you a flat tummy!

Doing crunches doesn't gives you a flat tummy as this yahoo article says. Most of us grew up with the impression that crunches or even sit ups will flatten you tummy, or even gives you six packs! Now the article mentions that it will harm your spine! Woah! So if you have been doing that it is time to do something else. The best way to flatten a tummy is to eat less, run more. At least it will control.

http://shine.yahoo.com/channel/health/want-flat-abs-4-reasons-to-stop-doing-crunches-2478751/