<br /> Everyone has that friend that wears a sweater on a hot summer day because they’re cold. According to Business Insider, here are three reasons why people are always cold.<br />1. Stress can caught a flight or flight response, causing blood to be pulled away from your body.<br />2. People could be anemic and not be able to properly oxygenate their bodies.<br />3. According to an expert in thermoregulation, women are simply colder than men. <br />