I went this morning to the doctor for a medical recognition. He weighted me, and told me that my BMI says I am obese. He did a bit of theater, broke the paper and told me the BMI is bullshit.

I weight 80 kg, 174 centimeters. Right at the start of obesity. I run ultra marathons, go to the gym regularly and generally take the bike twice per day.

BMI just checks the relationship between weight and height. According to this, a body builder is probably morbidly obese.