If this chemical does not flow through the brain, we don't feel sleepy. Although caffeine shows up in more than 50 plants and herbs, Americans like it best in the form of coffee. Coffee got a bum wrap because of the symptoms it produced when people didn't have their daily cup of joe. So the way you brew your coffee is important. You might be surprised to find out that there is less caffeine in a shot of Starbucks espresso than in a cup of Dunkin donuts regular coffee.
New studies appear almost monthly and now there are so many different kinds of tea on the market.
It may reduce the risk of stroke and heart disease. Oolong All three types originate from the same plant. The differences between the three main teas result from the degree of processing and their level of contact with oxygen. During this oxidation process, tea leaves undergo natural chemical reactions which result in distinctive color and taste characteristics. They are all high in flavonoids which may protect the heart by reducing cardiovascular disease.