Summer is a time of freedom, sun, and new experiences, but for those who have recently had their ear cartilage pierced, it can be a real challenge. Why do helix and industrial piercings start to “act up” specifically in the summer? The answer lies in our body’s physiology and the specifics of microcirculation in cartilage tissue. In this article, we will explore how heat affects lymph flow, why ears are particularly prone to swelling, and provide practical tips for cartilage piercing aftercare during the summer.