At last I feel completely justified in having the occasional grandpa nap....!
Nap Time: According to a Pew Research Center Social & Demographic Trends survey, on a typical day, a third of the adults (34%) in the United States take a nap. When respondents were asked if they had taken a nap in the past 24 hours, more men than women report that they had (34% vs. 31%). This gender gap occurs mostly among older adults. More than four-in-ten (41%) men ages 50 and older say they had napped compared with just 28 percent of women of the same age. Below the age of 50, men and women are about equal (35% vs. 34%). Click here to view the report. [PewResearch.org]
It's interesting to see that men over 50 tend to nap more than women of the same age...of course, it could be that we men have worked so much harder all our lives!