Though the evidence shows that people are not really different during a full moon, like homeopathy or organic food benefits happen just often enough that people are convinced by the placebo/nocebo effect to believe there must be something to it.
And science has its moon quirks too. Why, for example, would signals bouncing off the moon be so faint on full moon evenings?
The answer is in an eclipse, which has had its own share of superstitious attributions.
Researchers have aimed laser beams at suitcase-sized reflectors placed on the moon by Apollo astronauts and unmanned Soviet rovers. By precisely timing the light's return to Earth, they can measure the distance from here to the moon with millimeter precision.