Temperature perception varies by season

The same temperature can feel much colder in autumn than in winter because the body adapts to cold over time. This adaptation, called acclimation, helps the body generate heat more efficiently and reduces the sensation of cold.

Acclimation takes time to develop

The body needs about ten to fourteen days of regular exposure to cold to reactivate brown fat and improve blood vessel responses. This process helps the body generate heat more effectively and adjust to lower temperatures.

Brown fat helps generate heat

Brown fat, which is concentrated around the neck, shoulders, and spine, burns energy to produce heat. This tissue becomes more active with repeated exposure to cold, improving the body's ability to stay warm without shivering or exertion.

Circulatory system adapts to cold

Blood vessels near the skin contract in cold to reduce heat loss, a process called peripheral vasoconstriction. At the start of winter, this response is slow and inefficient, leading to cold hands and feet. With time, the body becomes better at managing this response.

Simple habits support acclimation

To help the body adapt, it is recommended to go outside regularly even on cool days, avoid overheating indoors, and wear layered clothing. These practices support the body’s natural ability to adjust to colder temperatures.

Avoiding extremes helps the body adapt

Staying indoors too much after the first cold days can delay acclimation, while sudden and extreme cold exposure without gradual steps can be uncomfortable. The body needs time and consistent exposure to adjust to colder weather effectively.