Green Tea apparently is not only it's high in antioxidants, it can also boost our metabolism!
Picture from seedol.com
Green tea, preferably decaf, is a great staple drink. Be aware that to speed up your metabolism, you'd have to drink at least five cups per day.
—Manuel Villacorta, R.D., national spokesman for the American Dietetic Association
So I think it was a wise choice for my mom to buy green tea every time it runs out in the house. =)
Source from iVillage