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Sleep Calculator

Sleep calculator - recommended duration by age, the amount of sleep cycles per night and recommendations for better sleep

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Sleeping according to ...Parameters
waking timecurrent timeTime needed to fall asleep :
07:00:0016:01:54Duration for 1 cycle :
Sleep durationBedtime hoursWake-up hoursTime intervals (lists) :
6cycle :09:00:0021:30:0001:31:54
5cycle :07:30:0023:00:0000:01:54
4cycle :06:00:0000:30:0022:31:54
3cycle :04:30:0002:00:0021:01:54
2cycle :03:00:0003:30:0019:31:54
1cycle :01:30:0005:00:0018:01:54
Note:The calculations take into account that, on average :
¤ 15 min are necessary to fall asleep.
¤ 5 to 6 cycles (one cycle=90min) of sleep are necessary for a good sleep.

These values may vary depending on the individual, see "parameters" to change them.

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