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4 reasons you should really learn to cook

Vegetables look much more appetizing when you're standing in the middle of the farmer's market than when you're staring at a fast-food menu. Instead of being led by hunger -- and glossy hamburger photos -- you'll choose more often what's best for your body.

"That step of picking up your own food will cut out more and more processed foods," Snyder says.

And healthier choices at the grocery store lead to healthier meals at home.

People who cooked meals at home at least six days a week consumed fewer calories than those who frequently ate out, a study published recently in the journal Public Health Nutrition found.

"When people cook most of their meals at home, they consume fewer carbohydrates, less sugar and less fat than those who cook less or not at all," study author Julia Wolfson told the Johns Hopkins Center for a Livable Future.