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.
Napping Tips. Research has found that napping regularly may reduce stress and even decrease your risk of heart disease. To get the most out of a power snooze, follow these quick tips from Mednick: Be consistent. Keep a regular nap schedule. Prime napping time falls in the middle of the day, between 1 p.m. and 3 p.m. Make it quick. Set your cell phone alarm for 30 minutes or less if you don't want to wake up groggy. Go dark. Nap in a dark room or wear an eye mask. Blocking out light helps you fall asleep faster. Stay warm.