Recently at lunch, I read what was being advertised on the drink packaging and had to laugh.  Some of these juices, teas, soft drinks, and flavored water promised to improve memory, mood, relieve stress, increase energy, and fight fat.  How can a 300 calorie beverage fight fat?  I must have missed that research.  These drinks have not been found to offer special health benefits for healthy people.  Save your cash and make the easy choice.  Stick to water.  A gallon or more a day is necessary to keep hydrated.  If you are looking to enhance your health and increase your energy, stay the course.  Practice healthy eating habits daily, make sure to get an hour or so of regular physical activity each day, and make time for productive sleep patterns as well.