Quoted in Hammond, Kayla. “National Napping Day Spotlights the Benefits of a Midday Siesta.” Huffington Post, 17 ноября 2011 г. Сайт .
74
Buettner, The Blue Zones.
75
Fredrickson, Barbara L. “The Broaden-and-Build Theory of Positive Emotions.” Philosophical Transactions of the Royal Society B: Biological Sciences 359, 2004: 1367–1377.
