The gith are supposed to have been genetically engineered by the illithids specifically to be physically efficient rather than massive. Less muscle mass = fewer calories required to maintain it = higher productivity even in a malnourished state. I won't be surprised if they just don't grow "swole" (blergh) no matter how hard they exercise, but instead have extreme fibral density which compensates for their slim stature.
Last edited by Brainer; 28/12/21 11:36 AM.