If you are extremely sensitive to cold, then you may lack a protein called carnitine. An amino acid-based derivative, this substance plays a very special role in the body, triggering the combustion of fats to produce energy.
Carnitine is synthesized in the liver and kidneys. Carried by the blood, it eventually penetrates cells, especially muscle cells, which contain up to 40 times more carnitine than other cells.
Without carnitine, fats cannot be burned by your muscles, resulting in weight gain, fatigue and extreme sensitivity to cold.
To increase the amount of carnitine in your system, eat more meat.
Eating a lot of the following foods can also help combat sensitivity to cold: carrots, artichokes, cabbage, leeks, tomatoes, pineapples, bananas, strawberries, black currants, apples, plums.
If you are always cold in winter, you might try reducing your intake of acidic fruit in the morning, and especially citrus fruit. Eat a copious breakfast that contains no aqueous fruit.
Breathing exercises, practiced at regular intervals throughout the day (except immediately following meals) improves circulation and alleviates sensations of cold.