https://gregnuckols.com/tag/natty-limit/#:~:text=If%20you%20take%20the%20data,tend%20to%20be%20normally%20distributed.

https://journals.lww.com/nsca-jscr/fulltext/2017/10000/fat_free_mass_index_in_ncaa_division_i_and_ii.9.aspx