Are you sure? 1. [I] Knowing what is good for us and what isn't can be confusing. [II] For example, drinking coffee. [III] Drinking coffee helps you concentrate and it can help you stay awake when you are tired. However, if you drink more than six cups a day, it may cause headaches, stomach upsets and you may not sleep well. [IV] 2. How about food? Chocolate contains fat and can make you overweight if you eat a lot. But chocolate also contains chemicals that make you feel happy. It can help if you feel depressed. Red meat has protein and vitamins, which are good for you, but it also contains fat. So if you eat too much, it can damage your stomach and heart. 3. How about daily activities? Take running. Running is good for you. It helps to make your heart and muscles stronger and produces chemicals that make you feel happy. But it can be bad for you, too. If you are a beginner and run too fast or too far, you can damage your heart and muscles. Studying is obviously good for you and your grades, but studying too hard can cause exhaustion, stress and loss of sleep. 4. So when you read a newspaper article saying 'X is good for you' or 'Y is bad for you', do some research. X may also be bad for you and Y may be good. Always read at least two articles before you decide which is true. (Adapted from C-21 Smart 11)