User blog comment:Dr Time/Video's for Vocal Manipulation and Adomopathy/@comment-25007094-20140925095108/@comment-79.119.193.196-20140925111459

Yep, it quite is, and you should ask that on the Adomopathy page. As it says there, explained shortly, it`s not like you can do a wall backflip (or possibly, just giving an example) if you got like 70 Kgs, at 13 years, whereas normal weight is around 40-50 Kgs.