Some dirty work in the name of science. A Canadian college student, Josh Le put a pair of jeans to the ultimate test by wearing them 330 times over the course of 15 months after he got curious about something he heard in class. A professor had said that she researches bacteria on textiles, so he decided to embark on this scientific journey.
The guy carried around paper towels to clean the jeans if it got stains, and left them airing outside or in the freezer overnight if they ever got smelly.
After 15 months and one week, he and the professor tested the jeans for bacteria. After washing them, he wore them for 13 days, which is about the average number of days jeans go unwashed. After retesting for bacteria, they found that the difference in bacterial carriage between the time periods was not significant.