Are you in the dark enough?

So I was doing some research today and I found something out that I have never heard of before when TTC. I read that doctors have done tons of research on women who are TTC in the light and who are TTC in the dark, and studies show that the women who TTC in the dark are more likely to get prego faster then the women who TTC in light. Although its a bit weird it makes sense. Women who are TTC need at least 8 whole hours of being in the dark then your average women. Simply because your body is more acceptable relaxed and at rest when it's dark so this means no night lights, no leaving on the TV at night, etc..... total darkness. Then in the morning you will feel completely rejuvenated and your reproductive system will do its natural thing it just makes sense. Any else ever hear of this?