Coke and Nestle seem to have developed a carbonated soft drink which is derived from green tea that actually helps you lose weight. At least that is the claim.... They say that it increases your metabolism and thus burns calories. Read the Ad Age article announcing its launch.
They call it "calorie deficient" (as opposed to, lets say, Coca Cola which is loaded with sugary calories). This miracle drink is called Enviga and apparantly it has no more caffine that a cup of coffee and provides 20% of the daily value of calcium. Coke has done a study and found that 3 cans will burn 60 to 100 calories. Yes, it does sound nifty but I am skeptical. Why not just drink water (or green tea) and eat celery?