“…extroverts have a more active dopamine reward system than introverts. Dopamine is a neurotransmitter that helps control the brain’s pleasure and reward centers. Having a more active dopamine reward system means that extroverts get more energized and excited by the possibility of reward than introverts. So extroverts are more driven to strike up a conversation with a stranger or hang out at the bar until last call…” Click Why Socializing Drains Introverts More Than Extroverts | Psychology Today for the rest of the article.
Put on the whole armour of God, that ye may be able to stand against the wiles of the devil. For we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world, against spiritual wickedness in high places.
Spiritual Wrestlings 