Its way off!

For my height 59" it says I need to weigh 90-98lbs for my bmi to be in healthy range of 20-22 for my age group(23y)! You can check any bmi calculator and see that is wrong! For me to weigh 90lbs I would be extremely under weight! I weigh 120lbs and wear a size 6 and this app says I am overweight!!

blessed mom to 6 boys about BMI 3D (3D Body Mass Index Rechner)