In the cold your body needs more liquid
A mere two per cent fall below your body’s optimal hydration level leads to a twenty per cent fall in your body’s ability to perform. Your body releases a lot of fluids during the winter, even if this is not as noticeable as on a warm summer day. Large amounts of fluids are needed to be active, but just as much disappears merely from breathing, since your body is trying to add heat and moisture to the dry, cold winter air. Drink a lot of liquids, at least four to five litres per day, preferably in small, frequent portions of 1.5-2 decilitres, and add a little extra water to your meals.
One way to check that you are hydrated is to take note of the colour of your urine. It should be a very light yellow, even almost clear. Dark urine is a sign of dehydration. Other signs include thirstiness, racing pulse, nausea, headaches, poor appetite, lethargy and muscle cramping.
Did you know that: Your body releases liquid as it cools down, which means that you will constantly feel the urge to urinate. This is not a good sign. It is a reaction to the body trying to protect the temperature in your vital organs from falling, which means it is reducing blood flow to peripheral body parts – such as your hands and feet. Add several layers to avoid frostbite.