“The beings now known on Earth simply as "Symbiotes" are a conquering, parasitic race which feed off the emotions of their hosts. They tend to force their hosts to perform spectacular and terrifying feats in order to feed off of the resulting rush of adrenaline (and possibly other hormones, such as phenethylamine). Eventually, these host beings would be completely sucked dry, exhausted by the constant stress and exertion, or simply die in a failed stunt.”