3 ms·

First reported in 1996: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2136406/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2136406/ People don't do it because

by WJW 3y ago

First reported in 1996: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2136406/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2136406/ People don't do it because it's healthy, obviously.