ELI5: Explain Like I'm 5

Effects of high altitude on humans

Okay kiddo, have you ever gone really high up a mountain or been on an airplane? At high altitudes, there's not as much oxygen in the air and the air pressure gets lower. This can make it harder for our bodies to breathe well and stay healthy.

When we're high up, our bodies have to work extra hard to get the oxygen we need. We might feel out of breath or dizzy because our blood vessels need to widen to bring in more oxygen. Some people might even get a headache, feel nauseous, or have trouble sleeping.

But our bodies are amazing and can adapt to high altitudes over time! If we spend enough time up there, our bodies will make more red blood cells, which carry oxygen to our muscles and organs. This will help us breathe easier and have more energy.

However, we still need to be careful and prepare properly when going to high altitudes. We should drink lots of water, avoid alcohol and smoking, and take things slow to adjust to the change in altitude. But with some caution and preparation, we can enjoy the beautiful views and adventures that high altitudes offer!