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.
If you want to wake up from your nap feeling immediately rested then either brief a snooze of 10-20 minutes or a longer 90 minute sleep are your best options. In a 10-20 minute sleep you will only enter the first, lightest stage of sleep known as non-rapid eye movement, or non-REM sleep.