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.
Talk to your family doctor about how much exercise is right for you. A good goal for many people is to work up to exercising 5 times a week for 30 to 60 minutes at a time.If 30 to 60 minutes at a time sounds difficult to fit into a busy schedule, you can split up your physical activity into smaller chunks of time.Try exercising for 10 minutes at a time throughout your day. If you're too stiff to exercise in the morning, wait until later in the day. 2  Don't get discouraged. 3  It can take weeks or months before you notice some of the benefits of exercise, such as weight loss. 4  Forget âno pain, no gain.â While a little soreness is normal after you first start exercising, pain isn't.