What's the last snack you had a work? Chances are it wasn't particularly healthy. The food people eat during the workday tends to contain high amounts of sodium and refined grain, according to a recent survey by the Center for Disease Control. Unsurprisingly, it's loaded with empty calories -- the average worker consumes roughly 1,300 calories each week in snacks alone. That's why Stanford graduate and former Microsoft product manager Michael Heinrich founded Oh My Green, a San Francisco-based provider of food and wellness services that leverages artificial intelligence and wireless sensors to help corporate employees make healthier choices.