During the first 2 weeks of the menstrual cycle (when estrogen is peaking), women are friendlier, more talkative, more socially relaxed, calmer, and more emotionally sensitive. During the second 2 weeks of the menstrual cycle (when progesterone is peaking), women can be more irritable, more stressed, and less calm, plus they want to be alone more. They can also be more focused on their interior worlds and more creative.
