A September 2022 study by Maastricht University in The Netherlands said,
“Brown fat is a metabolic heating system inside our bodies, burning calories”,
“This generates heat and prevents calories from being deposited as normal white fat. Brown fat is activated during cold and when we eat, but its activity is less in older adults and in individuals with obesity and diabetes.”
“When we are cold, we can activate our brown fat because it burns energy and releases heat to protect us. In addition, muscle can contract mechanically, or shivers, thereby generating heat. As there is considerably more muscle than brown fat in a human, shivering can burn more calories and produce more heat”
“Nevertheless, this is an important first step investigating the effect of shivering on health. Our findings are promising and may have important health implications, given that shivering improved many cardiometabolic health outcomes which are associated with diseases like type 2 diabetes”
“In future studies, we plan to assess the effect of shivering in adults with type 2 diabetes.”