Staying hydrated in the winter! You can easily get dehydrated when less ice water is drunk. More hot beverages are desired.  Many hot drinks like hot chocolate, black tea and coffee, are ones that move water out of your body quicker. If the increased loss of water from drinking those is not balanced with adequate plain water, dehydration occurs.

But I’m not sweating (as much)!

True. But some is still leaving through your skin pores.

Water still leaves your body through the air that you exhale. When you are exerting yourself and the air humidity is lower, it may be visible as a fog or steamy breath. Most of the time you are not seeing it leave, but it still does. And it needs replaced.

Keep your water levels up!

Water as a part of your blood stream carries nutrients to where they are needed. That activity is especially important for times of increased activity. The same liquid that carries nutrients in also carries used-up waste materials away from all body cells to the liver, kidneys, lungs and skin so that it can be eliminated. Waste materials that are not removed attract scavengers known as bacteria. Bacteria love and thrive in the acidic environment of things that are no longer usable by your body. Fewer waste materials = fewer bacteria! And healthier you!