Plain water has zero calories — the simplest entry in any tracker. A meta-analysis (Muckelbauer et al., Am J Clin Nutr 2013) found ~1 L extra water daily added 1–2 kg of weight loss in dieting adults. The "drink water before meals" tip has real evidence behind it.
How should I track Vitamin Water, Sweetened, Assorted Fruit Flavors?
Liquid calories from Vitamin Water, Sweetened, Assorted Fruit Flavors are easy to overlook because drinks do not trigger the same fullness signals as solid food. A meta-analysis (Wehling & Lusher, Am J Clin Nutr 2021) confirmed that people underreport beverage intake more than solid food. Most people pour 30–50% more than the label serving size without realizing it. Use a kitchen scale to weigh your glass or bottle once — you will know your exact pour going forward. This one calibration step can save you from hundreds of untracked calories per week.