Board Thread:False Info and Speculative Discussion/@comment-7603754-20160309202205/@comment-26879545-20160404112837

NishHound wrote: if stiles had quick reflexes  he would not panic and would not get caught off guard. Wrong. Stiles could be The Flash, the fastest man alive, and still be caught off guard and panic.

The only way one wouldn't be caught off guard is if they were on guard their entire lives or were raised from birth not to feel fear. Considering Stiles isn't a child soldier, he'll always have moments where he's caught off guard; it's part of human nature.