Here's an easy way to turn a routine workout into a powerful waist-whittler: Drink green tea.

That's right. Ditch the Gatorade and instead sip several mugs of the green stuff throughout the day. Research shows that the wonder duo of green tea and exercise may target belly fat better, so it shrinks more easily than with exercise alone.

Fat-Busting Brew
In a study, overweight adults who engaged in an exercise program for 12 weeks lost more belly fat if they also drank green tea daily. The green tea seemed to boost overall weight loss and triglyceride control in the study group, too. The magic amount of tea needed for the effect? Enough to get about 625 milligrams of catechins plus a little caffeine every day (roughly 7 cups daily). Start drinking green tea and use our free online Waistline Tracker to chart your progress.

The Power of Green
Researchers think that catechins in green tea might blast tummy fat by acting on enzymes that influence the body's calorie- and fat-burning mechanisms. And catechins and caffeine together may boost the body's metabolism. Brew up a pot of tea the next time friends visit and you can all enjoy these extra benefits as well:

• More energy. Green tea is one of four key energy-upping nutrients. Find out what the other three are.
• Healthier joints. Sore? Find out why green tea is great for creaky knees.
• Stronger heart. It doesn't take much to cut your heart disease risk. Here's how much tea you'll need in order to help your heart.

Find out how to make a quick and easy green-tea face refresher.

Green tea catechin consumption enhances exercise-induced abdominal fat loss in overweight and obese adults. Maki, K. C. et al., Journal of Nutrition 2009 Feb;139(2):264-270.