As part of the Go With The Flow campaign at the UK's University of East Anglia, students are encouraged to pee in the shower to save water.
"With 15,000 students at UEA, over a year we would save enough water to fill an Olympic-sized swimming pool 26 times over," Go With The Flow student founder Chris Dobson told the BBC News.
"Imagine how big an impact it could have if we could get everyone in East Anglia, or even the UK, to change their morning habits. The campaign has been really divisive – people either seem to love it or hate it."
