system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why is it harder to breathe if there is air being blown into our face?
gpt
Your body's respiratory system does not just suck air in and push air out, it also regulates the amount of flow on those two activities because your air filtration system is only efficient at certain flow rate, so if you inhale while air is being blown at you your body will try to limit the speed of air flow proportional to the speed of the air being blown at you by involuntarily resisting how fast you suck air and it will make you feel as if inhaling is hard.