There are two types of swimmers, an old saying goes: Those who pee in the pool, and those who say they don’t.
A new study may create a new kind – those begging the rest of us to stop.
Chemists found that mixing urine with sweat and chlorine in water created two compounds: trichloramine (NCl3) and cyanogen chloride (CNCl).
NCl3 is associated with lung problems, and CNC1 may affect the lungs, heart and central nervous system, according to the American Chemical Society.
“Swimmers can improve pool conditions by simply urinating where they’re supposed to — in the bathrooms,” the ACS concluded.