The practice of any activity in the outdoors during winter, requires the use of adequate clothing and equipment, without forgetting gloves and glasses for sun protection, an also sun blocker creams. You should never leave on your own, you have to be very familiar with the route you will follow and the best time to do it. Prevention of the possibility of sudden changes of the weather, low temperatures or intense winds are of utmost importance. Due to the weakening of the ozone layer, especially during the months of September and October, it is important to increase skin and eye protection. Remember that the snow and the ice refract ultraviolet rays multiplying the damage they can produce.