I came to post more or less this exact same comment. BMI does not take muscle mass into account at all. The Rock has a BMI of 31 (260lbs at 6&#x27;5&quot;) which is classified as obese. Hafþór Björnsson has a BMI of 41 (419lb at 6&#x27;9&quot;).<p>I agree with some of the other commenters too in that a full nutritional&#x2F;lifestyle analysis over a long period of time is next to impossible because it relies on self-reporting which is known to be flawed [1][2]. People under-report their intake and overreport their exercise frequency and duration.<p>[1]<a href="http:&#x2F;&#x2F;www.ncbi.nlm.nih.gov&#x2F;pubmed&#x2F;2082216" rel="nofollow">http:&#x2F;&#x2F;www.ncbi.nlm.nih.gov&#x2F;pubmed&#x2F;2082216</a>
[2]<a href="http:&#x2F;&#x2F;ajcn.nutrition.org&#x2F;content&#x2F;76&#x2F;4&#x2F;766.full" rel="nofollow">http:&#x2F;&#x2F;ajcn.nutrition.org&#x2F;content&#x2F;76&#x2F;4&#x2F;766.full</a>