This document discusses the importance of staying hydrated with water and discusses other beverage options. It notes that dehydration is a common cause of headaches and that drinking water before meals does not affect the number of calories consumed. However, water and low-calorie beverages like broth-based soups, milk, and vegetable juices can promote fullness and result in fewer overall calories consumed. While alcohol contains calories and can stimulate appetite, drinking alcohol in moderation and with meals can still allow for its enjoyment without significant weight gain.