If you’re not that hardcore, stop exercising. Or hold your breath for a couple minutes every hour. According to stuff found on the internet, which is the infallible information super-low-emissions highway, humans produce approximately 450 litres of carbon dioxide per day. That’s 0.3285 tonnes a year by the average Joe Blow(s out huge amounts of CO2). Multiply that by 6.5 billion humans and you get a very large number that is hard to calculate in your head.

Exercising causes even more unnecessary CO2 to enter the atmosphere. So while you’re getting killer abs, the earth is getting killer amounts of CO2. Can regulating your excessive breathing really help prevent global warming? Don’t hold your breath… or do?

Thanks to Dylan Romero for suggesting this tip - and happy April Fools Day!