To the fan who wakes up on Monday morning with a low-grade hum of anxiety because their team choked on Sunday.We often dismiss sports fandom as a hobby. But for millions, it is not a pastime; it is a pathology, a love, and a central pillar of identity. When you tie your happiness to the performance of strangers you will never meet, you are engaging in a radical act of vulnerability.When the Jersey Feels Like Skin is a compassionate, sociological deep-dive into the "Mood Economy" of the die-hard fan. Dr. Julian V. Robert moves beyond the stats to explore the fabric of our obsession, asking the hard question: Why do we let a game control our self-worth?Inside this guide to the psychology of fandom, you will discover: The Mood Economy: Why your spouse checks the score before you come home to know which version of you is walking through the door. The Inherited Scarf: How sports allegiance acts as a "primary socialization" tool, binding us to our families and histories often before we can speak. BIRGing and CORFing: The psychology of "Basking in Reflected Glory" when we win and the impossibility of "Cutting Off Reflected Failure" when the jersey is fused to your identity. The Rental Heroes: How to navigate the "Parasocial Trap" of loving players who are ultimately independent contractors, and how to survive when they leave. The Gentrified Soul: A look at how modern stadiums are turning fans from "Members" into "Customers," and how to keep the soul of the game alive from the cheap seats. This book isn't asking you to stop watching. It's asking you to look in the mirror (and at the scoreboard) with a little more kindness. It's time to understand the roar.