This shows an example sleep and awake cycle for the 28 day. There are many ways to do this but in this example it has been designed to end at 8am on the Sunday and has 9 hours asleep and 19 hours awake.

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This shows an example sleep and awake cycle for the 28 day. There are many ways to do this but in this example it has been designed to end at 8am on the Sunday and has 9 hours asleep and 19 hours awake.