Darwin looked like an ape, and to proof that he wasn't the only one, he turned the joke around and proved that whole the human race descended from Apes. In my case I want to proof that I'm not the only lunatic, and that we all are descendent of a monkey tribe that was fascinated by the moon, and thus we are all lunatics.

The main reason why, is because our metabolism gets a boost from watching a perfect circled moon, and on the contrast the sharp lines of a new moon. We evolved from a nocturnal - to a mainly diurnal species, for this to happen there must have been a "selection" towards animals who's eyesight was more adapted to light, this means that primates that were more active during the most brighter times of the night, as during bright-full-moon-light selected their mates. Because we were more adapted to the moonlight we also could look longer at the moon, and start to enjoy it's perfect shape, this appreciation stimulated hormonal levels, and lead to a synchronization of the female menstruation cycle with the moon cycle.

Over time a biological clock was set, and as we moved on to become diurnal we also became less dependent of the actual phases of the moon.

This is a copy of a debate I had about the menstruatial cycle and how it can be linked to the moon. For the whole story check out the Menstrual Cycles-topic on the Richard Dawkins forum.

One forum member said: I think all those you listed are plausible - except the moon.

The moon is also possible. It might be that the in- or decrease of light during the night activated an hormonal cycle, such as daylight gets our circadian rhythm going. A small topic on Wikipedia: Nightlighting and the moon

One final note, and post an overview of all the different moon phases, and a few visual facts.

When you see all the phases, you can see that there are actually only tree settings that are visually sharp; the full moon and the two moons around a new moon. This sharpness and symmetry helps us to stay visually focused, the other moons with one sharp- and one gradient side, will cause attention to (gradually) slip away.

The sharp-settings can maintain our visual focus for a longer time. Each of the two settings also activate different parts of the brain; the full moon the peripheral visual system, the moon is seen as a whole, and the other 2 activate the central visual system, O vs. I

2nd, a clip of a spectacular full moon last year, this surely boosts up one's metabolism.