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Green Tea & Caffeine Increase Calorie Burning

Weight loss is primarily accomplished in the kitchen and the gym. The idea is to burn more energy than you consume over a period of time. But it's always interesting to read the latest peer-reviewed research on this topic, and a study published in The American Journal of Clinical Nutrition put two common supplements to work in cool temperatures.

To investigate the thermogenic effects of green tea catechin and caffeine, researchers determined the brown fat activity levels of 15 healthy male subjects. Brown fat is generally activated at around 66 degrees. They were given a placebo or a beverage containing 615 mg of catechin with 77 mg of caffeine twice daily for 5 weeks in this cool environment. Caffeine slightly increased energy expenditure, but the combination significantly increased calorie burning for the 9 subjects with metabolically active brown fat.