Shivering in the Cold Has Benefits Like Exercise

Some good news about this cold weather: researchers found that shivering in the cold triggers some of the same fat-burning processes as moderate exercise.

The study

Endocrinologist Dr. Paul Lee, from Sydney's Garvan Institute of Medical Research, led a study — published in Cell Metabolism in February 2014 — on the communication between muscles and fat (paper). His team found that shivering in the cold for 10–15 minutes and bouts of moderate exercise both stimulate the release of irisin, a hormone produced by muscle tissue.

We carry two kinds of fat: "white fat," which stores energy, and "brown fat," which burns energy to generate heat. People with more brown fat tend to be leaner. The study showed that irisin helps nudge energy-storing white fat toward energy-burning brown fat — in both the shivering volunteers and the exercising ones.

What this means — and what it doesn't

The finding is genuinely interesting: cold-induced shivering and exercise activate overlapping pathways in fat metabolism. But it's a lab result, not a lifestyle prescription. The volunteers were exposed to controlled cold; nobody is suggesting you stand outside in a snowstorm instead of working out, and deliberately chilling yourself can be dangerous for people with heart conditions or circulation problems.

What it does add is a small piece of the metabolism puzzle: staying active in winter matters, and the body keeps finding ways to burn energy when the temperature drops. That's an idea Ayurveda has held for centuries — the concept of agni, or digestive and metabolic fire, sits at the center of how Ayurveda understands metabolism and weight.

This article is general information, not medical advice. Talk to a clinician about what's safe for you.