Want to wake up feeling fresh? Try this sleep calculator trends now
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Do you ever wake up feeling groggy?
Well, starting the day feeling fresh and alert is all about timing.
By inputting when you need to wake up, this sleep calculator will give you the perfect time to hit the sack.
Or, if you're thinking about taking a nap right about now, it will tell you when to set your alarm for.
MAILONLINE APP USERS CAN USE THE TOOL BY CLICKING HERE
By putting in when you need to wake up, the calculator will give you the exact time you should be asleep by (file photo)
The calculator, by home interiors specialist Hillarys, uses a formula based on the body's natural rhythms.
According to the NHS, adults need seven to nine hours of sleep a night — which works out as five or six 90-minute cycles.
Being woken by an alarm in the middle of one of the cycles is often what makes getting out of bed feel like such a challenge, as you could be interrupting deep sleep, according to the Sleep Council.
There are different phases of each sleep cycle, starting with three stages of non-rapid eye
