Love coffee? Need a little help with your metabolism and your diet pill regimen isn’t quite enough? Well, you’re in luck. People who consume coffee are awarded with a dieting edge. Coffee increases most people’s metabolic rate by about 10%, which means that you’ll metabolize up to 200 or 300 calories a day, simply by drinking coffee. 
There is a catch—you’ll need to acquire a taste for black coffee; you’ll want your coffee to be calorie free, which means you can add Splenda or another non-caloric sugar substitutes, but you won’t be able to add milk, or at least not more than a drop or two of non-fat milk.
You’ll have an easier time drinking five cups of coffee a day (which is what’s required of the diet) if you invest in high quality, strong bodied coffee. You can get flavored brews, just so long as they are calorie free.
Since drinking five cups of coffee (1000ml) in one day can have some negative side effects, you’ll want to make sure that you follow this diet carefully. Make sure you spread out the cups of coffee evenly throughout the day. You know yourself best—if coffee keeps you up, then make sure to have all your coffee before 5:00 or 6:00pm. If you notice you’re getting jittery or that your heart rate is increasing, try reducing your intake and working your way up slowly. Also, you may not want to consume any additional caffeine during the day.
In addition to drinking coffee, make sure you drink at least 1.5 liters of water each day as well as eating a healthy diet and exercising regularly.
If you are pregnant, nursing, or have a heart condition, please speak with your doctor before consuming large amounts of caffeine.