Green Tea

Buy green tea because you like drinking it, not because of it being 'effective'.  Green tea does boost the metabolism but it's very slight.  You may burn 10 or 20 calories more than normal, for example, if you drink green tea.  It's not going to make a big difference.

I didn't know that green tea boosts metabolism. That's good to know! My dad gives me Long Ji green tea from southern China (great in taste). One thing I noticed is that whenever I drink green tea, it gets rid of the bloated feeling in my stomach. Green tea is known to clean up your intestines and to carry away the greese. =) Lipton is not really green tea. ;) Get the imported one from China.

I drink tea because it's tastier than water and on a cold night, I need something warm in my belly. If it speeds up the metabolism, well that's just a bonus but it's pretty minor. Sometimes, I'll drink the peppermint tea because it's supposed to make a sour belly feel better.

Also, look into white tea. It's supposed to be really good for you too.