The article reflects on the cultural reverence for summer, associating it with light, activity, pleasure, and productivity. However, it emphasizes that human biology is not designed for a single-season existence; instead, humans thrive within a complex ecosystem made up of billions of microorganisms and cells that have evolved in cyclic environments of light and dark, heat and cold, activity and rest. The absence of seasonal change diminishes our biological adaptability, a key aspect of our immune response.

The author highlights that nature is characterized by change rather than stability, and it is through this change that resilience develops. For instance, plants that do not experience winter lack maturity, and fermentation processes require the passage of time, temperature fluctuations, and rest to develop valuable qualities. In the 21st century, modern conveniences such as heated floors in winter and air conditioning in summer have significantly weakened seasonal effects on daily life, leading to decreased need for biological adaptation which is crucial for strengthening the immune system.

Ultimately, the article argues for the recognition of winter's potential benefits, suggesting that embracing seasonal changes could enhance our health and resilience. It implores readers to reflect on the natural cycles and the importance of experiencing all seasons as part of a balanced life to ensure holistic well-being and a robust immune system.