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Annette [7]
3 years ago
7

Each stage of the sleep cycle lasts about how long? an hour 30 minutes 15 minutes 90 minutes

Biology
1 answer:
zalisa [80]3 years ago
8 0
Hey You!

There are 5 stages of the sleep cycle, and each stage lasts about 5-15 minutes long (usually around 10-15, though).

And that's youd answer! ^
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