What is the definition of Anniversary Biology?

Ah, let's dive into the whimsical world of 'anniversary biology'! This is the scientific study of how our lives and relationships change over time, specifically focusing on the unique biology that unfolds each year on our special birthdays. It's like taking a deep dive into the most intimate and biological of love stories, but with a side of existential dread.

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Here's an unsettling example sentence to illustrate our point: "On their 30th anniversary, the couple's biology shifted from 'love at first sight' to 'life-threatening obsessive behavior', proving that sometimes, our partners can make us do things we never thought possible."