A businessman takes a mid-day nap in the lobby of a midtown hotel in the Manhattan borough of New York on Aug. 1, 2014.

People take a nap on a couch at an IKEA store to escape the summer heat in Beijing in this August 2013 file photo.

A vendor selling watermelons naps as he waits for customers at a market in Taiyuan, Shanxi province, China.

A couple share a siesta at the base of a wall on Manly Beach in Sydney.

A worker takes a nap during lunch break, at a Foxconn factory in the township of Longhua in Shenzhen, Guangdong province, China in January.

Delegates rest during a break of the plenary session at the 2014 U.N. Climate Change Conference COP 20 in Lima.

A student takes a nap on a desk during his lunch break in a classroom in Hefei, Anhui Province, China on June 2, 2012, while studying for the National College Entrance Exam.

Revelers sleep on a bench after the second running of the bulls during the 2012 San Fermin festival in Pamplona.

An ethnic Uighur man takes a nap on a board as his goat, which is tied to the board, stands next to him at a demolition site in Aksu, Xinjiang Uighur Autonomous Region on Aug. 13, 2012.

Construction workers take a nap on their lunch break inside the Arena Das Dunas stadium as work continues in preparation for the 2014 FIFA World Cup soccer championship in Natal in this Dec. 13, 2013 file photo.

A laborer takes a nap in a wholesale fruit market area in Kolkata on March 24.

A man holds a toy bear as he sleeps outside City Hall in Los Angeles.