Drinking one cup of green tea a day may help speed up your metabolism.
Both green and black tea is brewed from the leaves of the same bush – called the camellia sinensis. While black tea leaves are fermented, green tea leaves are steamed and dried immediately after being picked. Because of these different processes, green tea leaves contain a much higher concentration of a chemical called catechin polyphenols, which acts both as an antioxidant and as a metabolism booster. Green tea has about 27 percent catechins, while black tea has just 4 percent.
When Swiss researchers gave volunteers a green-tea extract with every meal, the subjects displayed a 4 percent increase in energy expenditure over the next 24 hours, a boost the scientists attributed to the combination of catechins and caffeine. A 4 percent increase doesn't sound like much, but it could make a significant difference to someone who is training seriously and eating right.
Look at it this way, if you diet stays the same and your neither gaining nor losing weight that extra 4 percent will translate into 72 burned calories. If you make no other dietary or lifestyle change, you'll still lose 7.4 pounds during the next year.
Apart from the calorie savings, tea appears to give an extra boost by encouraging your body to burn fat rather than carbohydrates.
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