Staying hydrated in winter is just as important as staying hydrated when the weather is warmer.
Dehydration is much less noticeable in the winter, making staying hydrated a bigger challenge in cold weather than in warm.
Even though temperatures are cooler, the winter typically has much drier air which can lead to dehydration.
Becoming dehydrated can make you feel sluggish or run-down. Muscle fatigue is also a consequence of dehydration.
Dehydration in winter can leave you susceptible to colds and the flu which are more common in the winter months.