A new study involving teens in Chinese high schools found a positive relationship between midday napping and nighttime sleep. In China, naps are built into the post-lunch schedule at schools. Habitual nappers (who napped more often) tended to have a better nighttime sleep and neurocognitive scores. - http://www.udel.edu/udaily/2018/april/xiaopeng-ji-napping-neurocognitive-function/

Another reason to say yes to siestas :D