Interesting study...

Here's an interesting article I (Jen) read in an email newsletter I receive called "Well-Being Wire":

Working out releases a hormone that instructs your body to change bad fat into better fat, researchers at the Dana-Farber Cancer Institute and Harvard Medical School find.
When adults gain weight, most accumulate “white fat,” which stores energy and is metabolically inactive. “Brown fat,” by contrast, exists in smaller quantities, is more active, and burns energy at a greater rate, the New York Times reported Jan. 11.
When you exercise, a chemical called PGC1-alpha “talks” to fat cells, helping to release irisin, a hormone that turns inert white fat into brown fat, the researchers say. Though exercise alone often does not lead to weight loss, elevated levels of irisin do appear to prevent weight gain, the study says.
Changing white fat to brown could drastically improve your health, since white fat often collects around vital organs (where it’s most deadly). That’s true even if you don’t lose weight, researchers say.
The study appears online in the journal Nature.