Is winter really weakening? Why it can be more valuable to the body than constant summer

We live in a time when winter has become an unwanted season. As soon as it gets cold, we seek out sun trips. As soon as it gets dark, we turn on our screens. As soon as the pace slows down, we try to artificially speed it up.

Modern culture glorifies summer: light, activity, pleasure, productivity. But biology does not work on the principle of one season. Man was not created for eternal summer.

A human is not an individual, but an ecosystem. Our body is a community of trillions of microorganisms, bacteria, mitochondria, and cells. It is a complex biological system that evolved in a cyclical environment: light and dark, heat and cold, activity and deceleration.

There is no constancy in nature. There is change. And only through change does resilience emerge.

A plant that never experiences winter has no maturity phase. Fermented food only becomes valuable through time, temperature fluctuations, and a dormant phase. The biological system strengthens through the cycle.

In the 21st century, we have significantly weakened the impact of the seasons on everyday life. In winter, we have heated floors. In summer, we have air conditioners. Darkness has been replaced by the light of screens. The body hardly needs to adapt anymore. However, adaptation is a training for the immune system. It is not the cold itself that strengthens it, but the body's ability to safely adapt to it.

Winter is the season of biological regeneration.

Temperature adaptation: cold acts as a mild biological challenge. The body activates brown adipose tissue, optimizes energy use, and trains vascular elasticity. Hardening is not an extreme pleasure - it is a consistent process of adaptation.

Darkness and melatonin: Longer darkness in winter stimulates melatonin production. Melatonin functions have long gone beyond the “sleep hormone” – it is considered one of the most important regulators of cell protection. It acts as an antioxidant, participates in cell protection processes and regulates the immune response. Living according to the natural rhythm of darkness allows the body to enter a deeper regeneration mode.

Metabolic slowdown: A slower pace is not a sign of weakness. Slowed biological rhythms can mean less oxidative stress, less inflammatory activity, and more resources for recovery.

Heat, sun and sea are healthy and necessary. But constant summer – physically or emotionally – is a biological imbalance. Constant pleasure mode weakens the ability to adapt. And adaptation is the essence of vitality.

Spring – activation. Summer – expansion. Autumn – accumulation. Winter – regeneration. This is the body’s natural training system.

We fear not winter, but slowdown. But biology was designed for cycles. Nature never misses winter.

And perhaps longevity lies not in the ability to escape it, but in the ability to survive it.

Winter is not a weakening. It is one of the most important phases of the body's training. Not extreme. Not icy. But necessary.

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Erika Stankevičiūtė-Stanikūnė

Japanese longevity and glycation research expert,

working with Japanese health manufacturers for over 20 years,

certified placenta cosmetics trainer,

Member of the Japanese Glycemic Stress Association.