I also found that I gained a lot of weight after winter. Recently, I started going to the treadmill every day. It is easy to sweat and thirst when exercising. It is best to drink some water every ten or twenty minutes. I usually use kambukka Kabuka's accompanying cup, a Belgian brand. This cup is light and has a large capacity. A glass of water is enough for half a day, and the button of the cup is flexible. You can get water at the press of a button. Moreover, you can switch the drinking mode with one button, open and lock the cup with drinking, and you can switch freely with a push.