On returning to England, Darwin and an ornithologist associate identified 13 species of finches that he had collected on the GalÃ¡pagos Islands. This was puzzling since he knew of only one species of this bird on the mainland of South America, nearly 600 miles to the east, where they had all presumably originated.
To get the most out of a nap, follow these tips: 1  Keep naps short. 2  Aim to nap for only 10 to 30 minutes. 3  The longer you nap, the more likely you are to feel groggy afterward. 4  Take naps in the afternoon.
Typically, our bodies get tired after about 8 hours of being awake, so the best time of day for napping varies for each person, but the best window of opportunity tends to be somewhere from 2â4 pm Benefits of napping in healthy adults: impact of nap length, time of day, age, and experience with napping.