New Zealand, Norfolk Island, and OuvÃ©a, the Polynesian outlier near New Caledonia, are the unsubmerged portions of the largely sunken continent of Zealandia.
The 20-minute power nap -- sometimes called the stage 2 nap -- is good for alertness and motor learning skills like typing and playing the piano. What happens if you nap for more than 20 minutes? Research shows longer naps help boost memory and enhance creativity.
There is some controversy surrounding advice on the best way to take a nap. What it comes down to is that everyone is different. For instance, while the average duration of stage 1 and 2 sleep is about 20 minutes, not everyone glides effortlessly from one stage to the next in the same amount of time.