Everyone knows someone who’s perpetually bundled in sweaters, even in summer, or someone else who walks around in shorts while everyone else shivers. Temperature perception may seem like a matter of personal preference, but it’s rooted in fundamental physiological and psychological differences.
Why some people always feel cold (and others don’t) depends on a mix of biology, body composition, hormones, and even mindset. Your internal “thermostat” is unique. How it’s set can reveal a lot about how your body functions and adapts.
The Biology Behind Temperature Sensitivity
Our bodies constantly balance heat production and loss through a process called thermoregulation. When you feel cold, it’s because your skin’s temperature receptors signal the brain to preserve warmth by constricting blood vessels and reducing circulation to the skin and extremities.
People who tend to feel colder may have slower metabolic rates or less muscle mass. Muscles generate heat as they contract, so individuals with lower muscle-to-fat ratios often struggle to stay warm. Fat, while insulating, doesn’t produce heat; it only helps retain what’s already there.
Age also plays a role. As we get older, metabolism slows and circulation efficiency declines, making us more sensitive to temperature changes.
Hormones, Gender, and Body Chemistry
Hormones significantly influence how warm or cold you feel. For example, estrogen makes blood vessels more responsive, causing greater heat loss through dilation. This partially explains why women often report feeling colder than men, particularly in their hands and feet.
Thyroid hormones also play a key role. The thyroid gland regulates metabolism, and when it underperforms (a condition known as hypothyroidism), body temperature can drop noticeably. Even mild thyroid variations can affect thermal comfort.
Additionally, fluctuations during menstrual cycles or menopause can cause temperature swings, and it’s one reason why comfort levels vary so widely from person to person.
The Role of Mind and Environment
Temperature perception isn’t purely physical; it’s psychological, too. Studies show that emotional state can influence how cold or warm you feel. Anxiety and stress, for example, trigger vasoconstriction, the narrowing of blood vessels, which can leave your extremities feeling cold.
Conversely, positive emotions and social warmth can make people feel physically warmer. In one experiment, simply recalling a time of kindness caused participants to report higher body temperature.
Cultural and environmental factors also shape what we consider “cold.” People raised in tropical climates often feel chilly at temperatures others find mild, while those in northern regions adapt to lower average temperatures through both physiology and habit.
Can You Train Your Body to Feel Warmer?
To some extent, yes. Regular exercise boosts circulation and muscle tone, improving heat generation. Staying hydrated helps maintain blood volume, and consistent exposure to mild conditions, such as cool showers or outdoor activity, can gradually increase tolerance.
Sleep and nutrition matter, too. Lack of sleep or a low-calorie diet can suppress metabolism, making the body less efficient at generating heat. Balanced meals rich in iron, B vitamins, and protein support energy production and temperature regulation.
Ultimately, feeling cold is your body’s way of communicating its balance or imbalance. Whether you’re naturally chilly or tend to run hot, your comfort zone reflects a complex dance between biology, emotion, and adaptation.
