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.
The average person's sleep cycle is about 90 minutes, so you either want to take a 25-30 minute nap, or you want to take a 90-minute nap, depending upon how much time you have and how you want to feel when you wake up, says Breus.