The answer to this question is not that simple. It depends on the climate of the country you live in (think of Spain, the Philippines, and many Hispanic American countries), your sleep quality and sleeping hours during the night, your health and … your GENES!
A recent large study analyzed genetic information of 452.633 people in relation to their daytime napping, measured by activity monitors called accelerometers. They found out that how often a person takes a daytime nap (if at all) is partly regulated by his/her genes.
The researchers identified 123 gene regions that are responsible for taking a nap during the day. They also provided with preliminary evidence linking more frequent daytime napping with higher blood pressure and waist circumference.
These are very usefull findings especially for those companies that try to promote daytime napping to boost productivity of all their employees. Being aware of the fact that daytime napping is not just a choice, but is biologically driven, may be a good reason to search for different ways of increasing productivity based on the individual biological needs.
Curious? HERE is the source