Ever wondered why some friends can walk outside in winter with just a sweater while you shiver in a coat? Scientists have discovered that genetics, metabolism, and even brown fat play a role. Brown fat generates heat by burning calories, which can make some people naturally resistant to cold.

Lifestyle factors also influence this ability. Regular exposure to cooler temperatures, along with certain diets rich in capsaicin and omega-3 fatty acids, can enhance cold tolerance. Interestingly, this resistance is linked to higher energy expenditure, meaning these individuals may burn more calories naturally, even while at rest.

Understanding your body’s unique traits can help you optimize comfort, energy, and even weight management. It turns out that your friends might have a hidden superpower after all.