Ever been to a zumba class? If you haven't, then you should know that a zumba class, when done right, looks something like this. You're in a room full of people, loud Latin beats playing, the ...

Costco and its low-cost health care partner are expanding into weight-loss management. Costco will begin offering its members in the U.S. access to a weight loss program through Sesame, a health care ...