I also wondered about that! My son never seems to drink enough. I didn’t understand what was going on. He was on lasix at the time for his heart problems. He didn’t want any juice, water, or even formula. But now he is not taking lasix anymore he wants to drink more. I can’t wrap my brain around an explanation. I am just glad he wants to drink more now that summer is approaching. Good question Alex! I have always wanted to ask a question like that. Just never knew how to phrase it!