why a person experience breathing difficult when climbing a mountain

Question: why a person experience breathing difficult when climbing a mountain
- Keywords:
  breathing
Asked by chat20fen to Sally, Mmboyi, Mike, Michael, Jacinta, Gliday, Elkana, Edna, Arnold on 17 Jul 2025.
- Michael Kimwele answered on 17 Jul 2025:
  
  A person experiences breathing difficulties when climbing a mountain primarily due to reduced oxygen levels in the air at higher altitudes. This condition, known as hypoxia, makes it harder for the body to get enough oxygen with each breath. The thinner air at higher altitudes results from lower air pressure, meaning the same volume of air contains fewer oxygen molecules.

Question: why a person experience breathing difficult when climbing a mountain