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.
How To Take The Perfect Nap By J.P. | source:WSJ Sep 8th, 2013. Naps can be tricky. The time of day, the length, the location, and your current sleep schedule all influence the effectiveness of the nap you take. According to the infographic, the best time to take a nap is between 1:00pm-4:00pm.