I must drink water every day to stay hydrated because I dehyrate very easily. I drink an average of 6 -7 bottles of water everyday. I prefer drinking water at room temperature because I tend to guzzle and cold water gives me that uuuuhhh "brain freeze" . Of course, when I go out to eat, I will drink ice water "like a lady"! But because I do drink so much water, it does get boring after a while so I like to spice it up with powdered flavors. What I do not like are the enhanced waters that are already flavored.