Why does fresh air feel better to breathe in than indoor air?
In: 512
May depend on a lot of stuff but it mostly comes down to CO2. We humans need to take O2 into our bodies and kick the CO2 away. Too much CO2 suffocates humans.
As the time passes, humans inside consume the limited O2 indoors and increase the CO2. Our bodies detect the difference and start sending signals to our brains to either open the window/door/whatever or leave the room, just to protect the body from suffocating.
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