You actually don’t lose most of your body heat through your head as you’ve likely aways heard. Body heat loss is related to how much skin you expose, not which part of your body you’re exposing.
Alcohol may make you feel warmer initially because it dilates blood vessels and sends more blood to your skin. This creates a sensation of warmth, but it also pulls heat away from your body’s core, which means your body temperature isn’t actually raised.
Extremities feel colder more quickly because the body’s main job is to keep core organs warm. If your hands and feet feel chilled, wear gloves or try disposable hand or foot warmers.
A lesser-known reason you may be feeling cold is that you may be dehydrated. While you may remember to drink more in the heat of summer, don’t forget you need extra water on cold days
A space heater can warm a small area quickly without having to turn up the heat in your entire house. However, portable electric heaters are associated with fire risk, so use them safely.
Although not well understood, sleep deprivation—even short-term—can make you feel chilly. Lack of sleep may reduce activity in the hypothalamus, which regulates functions including metabolism and body temperature.
It’s no secret that the increased hours of darkness in winter may impact your mood. However, some research also has found that people perceive that they feel warmer in cold temperatures when the lights are brighter.