Yahoo Finance To wake up refreshed, 'calculator' tells you what time to sleep
If you want to know how we function each day, it is important to understand and study our sleep cycles. It goes without saying that when we don’t get enough sleep, the next morning can result in drowsiness, lethargy, mood swings and grogginess and lack of concentration.
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Best night’s sleep
Sleep experts will suggest that healthy adults should get anywhere between 8 to 9 hours of sleep every night. But many will complain that in spite of getting the requisite amount of sleep, the feeling of sleep debt continues to bother them.
In order to help with this problem, a UK retail store has come up with a sleep “calculator”.
How does it work? It manages your sleep through your sleep cycles, which are:
Light sleep
Rapid eye movement (REM) sleep
Deep sleep
Each of these cycles lasts about 90 minutes each, and experts say that a normal health adult should complete about five to six sleep cycles in one night.
To use the calculator, simply enter the time you need to wake up the next morning and it will tell you when you should turn off the lights.
For example, if you want to wake up at 7:00 am, the app will suggest you should go to sleep at 9:46 pm, 11:16 pm, 12:46 am or 2:16 am to wake up feeling refreshed and rested.
Remember, an average person takes about 10-20 minutes to fall asleep. So these timings are calculated basis a median of 14 minutes to fall asleep.
So if you fall asleep within 14 minutes at the designated time given in the calculator and wake up at the desired time, you should feel raring to go in the morning.
However, if you continue to feel tired throughout the day, there may be an underlying problem that needs medical attention.
Most of the time, people mistake fatigue for tiredness even though there is a difference in degree between the two. Fatigue is a state of extreme tiredness or lack of energy, often called complete exhaustion. Unlike tiredness, it lasts even after getting enough sleep. This can be caused by Anaemia, sleep apnea, Hypothyroidism, diabetes, Restless Legs syndrome, and other lifestyle related problems.
