For someone weighing 69 kg who is 182 cm tall:
You have a Body Mass Index of 20.83 . This means that you fall into the normal range.
You are in the ideal weight-for-height range. To maintain this, make sure you have a healthy, well-balanced diet and keep active with regular exercise. This will help keep you feeling good and lower your risk of developing heart disease, diabetes and other health problems. Try to do at least 30 minutes a day of moderate physical activity on five or more days of the week. This could include a brisk walk, cycling or dancing. To improve your health, don't smoke, cut down on salt, sugar and high-fat foods, and limit your alcohol intake.