The human body loses about 600,000 skin particles every hour.
Why it is true
The skin constantly renews itself. Every hour, the human body releases about 600,000 dead skin particles. Over a lifetime, a person loses about 18 kilograms of skin. Most household dust is made up of these cells.
Source: Live Science
Would you rather be asked first?
This is the reading side of the site, so the answer is in the sentence above — that is the whole point of it. Test yourself works the other way round: the question comes on its own, and the fact and the explanation only appear once you have answered.
Related facts
Every day, the human body loses and replaces millions of skin cells.
Our skin renews itself almost completely every 28 days.
The human body has enough DNA to stretch from Earth to Pluto and back 17 times.
The skin is the largest organ of the human body, accounting for about 15% of your total body weight.