Conquer Your Sleep Cycle and Find Your Best Bedtime With Sleepyti.me

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It seems nearly every day we hear about some new disaster that awaits those of us who aren’t sleeping properly, from weight gain to dementia to future three-eyed offspring. I may have made that last one up. Regardless: YES, you probably know you need to be sleeping more. Or better. More and better. More and better sleep for all!

And here is a tool to help in that mission: http://sleepyti.me/.

It’s a bedtime calculator—enter in the time you have to wake up in the morning, and sleepyti.me will tell you the best times to hit the hay in order to wake up feeling alert. Here are my results, based on a 7 a.m. wake-up call:

You should try to fall asleep at one of the following times:

sleep cycle

10:00 PM or
11:30 PM or
1:00 AM or
2:30 AM

You can also start with the time you’re going to fall asleep and calculate when you should wake up.

Notice none of my recommended bedtimes would get me the much-lauded eight hours (going to bed at 10 would net me nine hours sleep; going to bed at 11:30 p.m. means seven and a half hours of rest). This is because sleepyti.me works by counting backwards in sleep cycles from the wake-up time you give.

The average sleep cycle lasts about 90 minutes; wake up in the middle of a cycle and you’ll want to dive right back under the covers, but wake up in between your natural cycles and you’ll feel alive alert awake enthusiastic—even more so than if you’d slept more hours but woke up between cycles.

“Please keep in mind that you should be falling asleep at these times,” sleepyti.me warns. “The average adult human takes fourteen minutes to fall asleep, so plan accordingly!”

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