I find that drinking out of a water bottle ( 1 liter) it is alot easier to get down . FOr some reason when I drink out of a glass I take smaller drinks thus, making the process alot slower. I also consume most of my water intake at work during the day because it is always on my desk right in front of me --instead of at the house in the evening when you are busy with family, etc. and you might sit it down in another room and forget about it... Hope this helps!!