Https://www.shape.com/fitness/trends/blink-fitness-will-feature-real-members-ads
https://hellogiggles.com/lifestyle/body-shaming-gym-advertisements/
Anything that you can do to harm yourself.
Yes, you can even get caffeine poisoning, Good Luck
The correct answer is this one: "human industrialization." Air pollution comes from human industrialization. Because of too much industrialization, there are a lot of excess and wastes in any form: air or even liquid and solid wastes.