A trolley loaded with water cooler bottles and an extra one on a street in Istanbul, Turkey

A trolley loaded with water cooler bottles and an extra one on a street in Istanbul, Turkey in January 2014

Man lugging a heavy looking package over his shoulder in Istanbul, Turkey

Man lugging a heavy looking package over his shoulder in Istanbul, Turkey in January 2014

Man with a trolley delivering goods in Tsuen Wan, Hong Kong

Man with a trolley delivering goods in Tsuen Wan, Hong Kong in September 2012

Man on a tricycle with big boxes in Georgetown, Penang, Malaysia

Man on a tricycle with big boxes in Georgetown, Penang, Malaysia in September 2012

A porter in Istanbul, Turkey

A porter in Istanbul, Turkey in January 2014

Carrying a big sack in Yangon

Man carrying a big sack in Yangon, Burma in August 2010

Carrying boxes

Porter carrying many boxes in Chiang Mai, Thailand in September 2012

Back tattoo

Man with a huge tattoo on his back in Tsuen Wan, Hong Kong in September 2012

Porter with a heavy load

A heavy load on a trolley in Tsuen Wan, Hong Kong in September 2012

Carrying a heavy load

A man carrying a heavy load at a market in Yangon, Burma in August 2010

Free porter

Free porter at Salak Tinggi train station outside Kuala Lumpur, Malaysia in March 2010. Love how he has a sign on his back saying his services are for free

Hotel porter

A porter outside an hotel in Guangzhou, China, in July 2009