I can relate to this. Personally I think there's a blurry line between introversion (which is different from shyness) and stuttering. ​ Many non-stuttering introverts feel drained after intense socializing. I feel as if my stutter was a more pronounced version of this phenomenon. ​ Hopefully I'd be able to crack a way to bump/keep my stamina, since having only stamina for a relatively short time is quite limiting.