Last week I purchased a water mug that holds 64 ounces! I figure lifting it is a workout not to mention the exercise going to the ladies room! Each morning I fill it with ice and water and strart drinking and refill as the day goes on (usually refill at least twice). It is pretty well insulated so the ice lasts all day. It's too large to be overlooked sitting on my desk so I am constantly drinking. The big joke in my office is that a meeting is too long if I have to refill my water mug before it is over. Sometimes I have a day that I don't seem to be drinking enough and I will add a squeeze of lemon or a little crystal light (very weak) to make it more appealing. I have one cup of coffee in the morning, drink water all day, and reward myself with a glass of wine or diet soda with dinner if I have drank enough water.