A Japanese man has defended his decision to defecate outdoors.
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Masana Izawa, a 69-year-old conservationist and photographer from Tokyo, has been relieving himself in the open air since 1974 in a bid to protect the environment.
For almost a decade, Masana has used a toilet just 14 times and defecated 15,000 times.
He said: ''To poop is a responsibility we need to be aware of. To poop outdoors is a way of giving back life.
''If you're an ant, it's a fairy tale candy house.''
Masana revealed that nobody has questioned him yet.
He added: ''There are criticisms, with some saying that it's unsanitary, dangerous, illegal etc. But I have never been told not to do it.''
On the best way to poo outdoors, he instructed: ''Select an appropriate location so as not to contaminate the alpine zone and water source where the decomposition power is weak.
''Make sure to dig a hole and fill it.''