Yes I should have clarified: I think the BMI levels (underweight, normal etc.), that is the "wording" cannot necessarily be applied to athletes (edit: and could

Yes I should have clarified: I think the BMI levels (underweight, normal etc.), that is the "wording" cannot necessarily be applied to athletes (edit: and could be misleading for people and their self-concept when their weight is perfectly fine). You are right of course that the top runners in a competition likely stand out BMI-wise from the rest.