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ONSEN® SLEEP CALCULATOR

ONSEN® SLEEP CALCULATOR

Increasingly popular sleep calculators have become essential tools for people who have chosen polyphasic sleep, including the relatively popular biphasic sleep. However, they’re also incredibly useful for those of us who follow a traditional circadian rhythm based on day and night.

Thanks to sleep calculators, you no longer need to calculate when to set your alarm. Just enter a few basic details and you'll receive ready-made suggestions that help you fall asleep and wake up at the right time, without struggling to feel rested.

Calculate how much you need to sleep for efficient sleep!

How old are you?
20 years
30 years
40 years
50 years
60 years
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Discover the most functional Osaka Air foam mattress and our other products!

Producer of the boldly perfect Osaka Air mattress, anatomical pillows, and ergonomic furniture. A leader in the European market.