I was wondering if drinking too much water could be making me thirsty. I feel thirsty most of the time. I drink a glass (2 cups) when I first wake up. At work, I drink about 1 sports bottle (4 cups) worth of water, go home for lunch refill and drink another sports bottle before I go home. I drink another sports bottle while working out. Then I drink another glass of water before bed. That is about 16 cups of water in a day when the recommended is 8 cups. I don't think I have diabetes since I have a very normal BMI (23.3). I also work out somewhere between 1/2 hour 3-5 days a week and 1.5 hours 1-2 days a week. Just wondering if anyone might know.