In order to decide whether someone is “thin” or “fat”, doctors usually use the Body Mass Index (BMI) as a standard. Body Mass Index is a simple index of weight-for-height that is commonly used to classify underweight, overweight and obesity in adults. It is defined… [More]

Every adults need at least 6-8 hours of quality sleep every day. Lack of sleep can causes a lot of physical and mental problems, one of them is the difficulty to concentrate. But do you know that outgoing people are the most affected by this?… [More]