Energy expenditures resulted in a 13% increase in fatty acid

Energy expenditures were monitored for 15 men (average age 26) and 10 women (average age 32) as they alternated 12-hour periods in rooms heated to either 80 degrees or 60 degrees. The surprising finding: Exposure to 60-degree temperatures resulted in a 6% increase in calories burned without significant changes in physical activity. Moreover, exposure to lower temperature also resulted in a 13% increase in fatty acid levels in the blood, indicating that fat stores were being mobilized. http://www.ncbi.nlm.nih.gov/pubmed/20826525