- There's good evidence that light effects sleep. And I'm sure we all know this intuitively! Artificial lights at night make it harder to fall asleep and stay asleep.
- The body produces more melatonin, a hormone, when it is dark. Melatonin helps regulate other hormones in the body, and effects menstruation.
- There's some evidence that using light from day 13-17 while sleeping in a dark room the rest of the cycle promotes regular cycles.
Now, I haven't purposefully lit my room on days 13-17, but I did put up heavy curtains a little over a month ago. Right away I noticed that I was sleeping better. I noticed a longer luteal phase in my previous cycle. Then this cycle, I ovulated much earlier and again had a longer luteal phase. Perhaps the light has something to do with it? I'm hoping the pattern continues!
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