Author's Note:

This is a realistic evaluation on Sonic's body, from his skeletal frame to his hands and feet and how his body can cope with such speeds with ease. BTW this goes into a lot of detail and depth – so just to warn you how serious this study is. Also, Sonic may differ in height, weight and physical stats from official Sega information. This is the real Sonic I use in all my stories.

This Version 2 is much longer than the original, with a lot more facts included.