But in Spain, they have a siesta - it's about four hours sleeping in the afternoon.
However, it's not clear from the study whether sleeping poorly is a symptom of depression, or vice versa.
Inside, keep your body off the ice or ground (the Inuit put their sleeping blankets on top of a bed of sticks and reeds) and create heat-trapping "loft" (it's what keeps you warm in a sleeping bag) by layering a few small blankets or big trash bags, with leaves or crumpled newspapers in between.
The Daily Telegraph's radio critic Gillian Reynolds said she agreed with Claire Fox of the Institute of Ideas who suggested on Radio 4's Any Questions that it would be better to let sleeping dogs lie.
It's not the first time the owners try to blow life into the sleeping giant.
Until 2006, Ghana was regarded as the continent's sleeping giants, having dominated African football in the years after it became the first independent sub-Saharan African country over five decades ago.
It's about a group of dream thieves who slip into the subconscious minds of people while they are sleeping and steal ideas for corporate gain.
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"It's tremendously rewarding to take a stressed baby and work with that baby until that baby is feeling better or sleeping, " Woodruff said.
Pet owners purchasing Wandant must decide whether it's best to have the device ferret out the truth about their slothful dogs or whether they should just let sleeping dogs lie.
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He stayed in private homes, first to save money on hotels, then because he liked it and his hosts seemed to as well. (He continues this even now, sleeping in children's rooms, cramped Latino households and even more crowded Amish ones, often riding between them on his beloved Harley.) In November 2004 he won, by 53% to 45%.
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