In this full episode of SparkPeople Radio, host Lily Hills flies solo. She tells you how drinking more water can lead to greater weight loss, then she talks to SparkPeople's editorial director Stepfanie Romine about how air conditioning might be harming our waistlines. Lily catches you up on the summer's worst calorie traps, and she talks to a SparkPeople member who does triathlons after losing 50 pounds. Finally, she shares an uplifting tale of Dave Matthews' flat tire.