The graph gives information about BMI, which stands for body mass index. According to the graph, BMI is a value derived from the weight and height of a person. Weight is in kilograms and height is in centimetres. As we can see from the chart, the healthy weight range is from 18.5 to 25. If the BMI is higher than 25, the person will be considered as overweight and obese when the figure goes above 30. However, if the BMI is below 18.5, then it is underweight. In conclusion, it is better for people to keep their BMI between 18.5 and 25 to stay healthy.