Overweight is defined as excess body weight, at the cost of an increase in fatty tissue, at no more than 10 percent higher than a healthy weight according to the age, height and body type of each individual. In most cases the first indicators of weight gain are reflected in the way our bodies look and feel: when our clothes are tight and the way we look in the mirror, can be indicators of excess fat. We shouldn't ignore the first signs of weight gain, because overweight isn't only a problem of how we look, but also a sign of our state of health.