How the air pressure affects the body. What climbers have to do to overcome the ill effects.
1.)As the amount of oxygen in the lungs decreases, the blood becomes less and less efficient at getting and moving oxygen . This means that no matter how fast you breathe, keeping normal blood amounts of oxygen is not possible at high altitude.
2.) Acute Mountain Sickness (AMS) represents the body's intolerance of the hypoxic (low oxygen) environment at one's current elevation.
The key to avoiding AMS is a rational ascent that gives your body time to acclimatize. People acclimatize at different rates, so no absolute statements are possible, but in general, the following recommendations will keep most people from getting AMS:
At altitudes above 3000 meters (10,000 feet), your sleeping elevation should not increase more than 300 meters (1000 feet) per night, and every 1000 meters (3000 feet) you should spend a second night at the same elevation.

The kind of food you will need for climbing Mt. Everest

Breakfast on Everest is 2 granola bars, 2 bowls of instant cereal, 1 pop tart, peanut butter biscuits, and dry fruit.
Lunch on Everest are 2 candy bars, 1 cracker packet, 1 nut packet, 1 cookie packet, bread, oyster clams, & cheese.
Dinner on Everest are soups, raw noodles, freeze dried dinners, instant mashed potatoes, & salmon pouches.
Drinks are cocoa, tea bags, energy drink packet, nutrasweet koolaid, hot cider, and instant coffee.

Special Facts
Tenzing Norgay was first man to climb Mt. Everest

Bibliography