NREM sleep: NREM (non-rapid eye movement) sleep is dreamless sleep. During NREM, the brain waves on the electroencephalographic (EEG) recording are typically slow and of high voltage, the breathing and heart rate are slow and regular, the blood pressure is low, and the sleeper is relatively still. NREM sleep is divided into 4 stages of increasing depth leading to REM sleep. REM sleep is when dreams occur. We have 3 to 5 REM periods per night. They occur at intervals of 1-2 hours apart and are quite variable in length, ranging from 5 minutes to over an hour. REM sleep is characterized by rapid, low-voltage brain waves, irregular breathing and heart rate and involuntary muscle jerks. About 80% of sleep is NREM sleep. If you sleep 7-8 hours a night, all but maybe an hour and a half is spent in dreamless NREM sleep.
The tax return processing is depending on how you filed your tax, If you used e-Filing to send the file it should be received and reviewed within 24 hours. But the approval of refund will depend if you have errors, incomplete information and others that will cause delay.
If you file your return electronically (EFILE and NETFILE), we generally take as little as eight business days to process it. If you file your return on paper, we generally take four to six weeks to process it. We may take longer to process your return if we select it for a more detailed review. For more information, go to Review of your tax return by the CRA. If you choose to use direct deposit, you could get your refund faster.