This doesn't make any sense :(?

First of all, look at the ingredients in the drink. It probably has an artificial sweetener(s) in it. I would strongly recommend staying away from splenda, nutrasweet, etc.. These artificial sweeteners have not been thoroughly tested in humans-and just like the scenario of saccharin in the 1980's-they put out the product without thoroughly testing it-and people ended up with cancer. I do not trust anything artificial. Use sweeteners, or buy products with natural sweeteners such as stevia, honey, organic sugar cane, agave, etc... much safer, and healthier for your body. Have a healthy day.