Today's challenge: Get a full night's sleep (that's seven to nine hours!) tonight. It just may help you eat more healthfully and avoid added sugars tomorrow. Getting enough sleep likely helps curb our appetite for high-calorie, high-carbohydrate foods, researchers have found.

When University of Chicago Medicine sleep researchers managed to get young adults to extend shut-eye for just an additional 1.6 hours a night, the change was linked to a 62 percent drop in cravings for sweet and salty junk food.

Join us for the Star Tribune Sugar-Free Challenge. The goal is to avoid added sugar in February, take stock of how much you're consuming and make healthful changes. The Star Tribune is hosting a Facebook group to offer support, tips, facts and daily challenges: bit.ly/sugarfreestrib.