Washington

MATCHA tea has been touted as a superfood because it's high in antioxidants and vitamins. But most who drink it have a simpler mission: It's their morning cuppa.

A majority of Americans drink at least one caffeinated beverage per day, but the side effects can be unpleasant. Vandana Sheth, a registered dietician for 18 years, said that many of her clients want a morning jolt but do not like the headaches, racing heart and sweaty palms that go along with several cups of coffee.