Aside from the scientific explanation, the term "moon cycle" is often heard in astrological circles. According to astrology, the moon's cycle can affect the way we feel about things. In particular, when the moon is full or new, both males and females can experience dramatic changes in their mood and behavior.
When the moon is full, stress becomes a major factor and people become more sensitive to details. An overload of work will add to the frustration and people will deal with their own needs rather than paying attention to others' needs. Often, a lack of assertiveness will be obvious.
A new moon brings with it the sense of calmness. In this moon cycle, people's emotions get back to normal, their determination will return with the feeling that anything can be accomplished, and there will be more energy and acceptance of other other's ideas.