That's interesting, you're right, the article does report a linear-only relationship! They may not have sampled muscular BMIs much above 30 though: https://ww

That's interesting, you're right, the article does report a linear-only relationship! They may not have sampled muscular BMIs much above 30 though: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5745404/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5745404/ Gym sample: > n = 61, mean BMI: 24.0, s.d.: 2.75 ~5% would be above 2 s.d => 3 people with BMI above 29.5 My 'theory' would be for muscular builds with BMIs above 30, the linear relationship breaks down for heterosexual women. You might need a larger sample to test that, perhaps with a bodybuilding sample rather than college students.