What is another challenge someone would face when training to climb Mount Everest

Hypothermia

Explanation:

The mountains are freezing! If you don't have the proper equipment then you could freeze to death.

Air Pressure

Explanation:

The lower the air pressure, the more difficult it is to breathe

The higher the height above sea level, the less air pressure there is in the atmosphere

According to National Geographic, 'Mount Everest's Summit (29,000 ft ASL) is approximately 1/3 the air pressure that exists at sea level'

Scientists have estimated that around 19,000 ft and above, the human body isn't capable of remaining indefinitely.

Frost-bite is also definite if you don't climb prepared. Due to the lower air pressure, the heart has to work harder to pump blood and deliver the needed heat throughout your body.