Hydration is critical for a successful journey into low oxygen environments.
Make sure you are drinking 4 to 5 liters of water per day up and down the Everest trail. Hydration is critical for a successful journey into low oxygen environments. If there is one tip that we can give you while in the mountains, it is to make sure that keeping hydrated is one of your top priorities.  At higher levels of altitude, your body will dehydrate much quicker than it will at sea level, and you will have to make sure you are drinking plenty of water to compensate.