brainAccording to a just-published study in the journal Neurobiology of Learning and Memory, during your Week 3 and Week 4 (the second half of your cycle) when you read a shocking news article, hear juicy gossip, participate in a surprise party or have another emotionally-charged experience, you’re more likely to remember the small details of it later on, such as what a person wore or said. One theory from the researchers about why this occurs is that during this phase, progesterone makes your brain better at forming stronger memories of emotion-based events, enabling you to remember more of the particulars.