21 Bizarre Side Effects of Becoming a Running Junkie

19. The Unintentional "Runner's Tan" Lines

Despite sunscreen efforts, you develop distinct tan lines that defy normal summer patterns. Whether it's the stark contrast between your upper arms and shoulders from sleeveless tops, or the permanent demarcation just above your sock line, these lines are a testament to countless hours under the sun, a unique topographical map of your dedication.

20. The Sudden Onset of "Chafing Mindfulness"

You become acutely, almost obsessively, aware of seams, fabric choices, and potential friction points on your clothing. A seemingly innocuous label or an ill-fitting pair of shorts can transform a pleasurable run into an agony of irritation. You develop a sixth sense for chafing hotspots and an arsenal of balms and anti-chafing sticks.