Phantom instinct

My name is Acyuta Singh. Age 58. I didn't have much value to my life but somehow i made use of it by joining a monastery. I was requested to perform an exorcism at some desolate place with the requesters but little did I know that i would be stabbed to death. My conscience faded cursing my killers, when I came to I had learnt that I'm no more in the 21st century but in now in the 35th. The worst part of my discovery in the new era is that I have to forcefully restrain my body. Whenever I'm near a battle field, in the vicinity of combatants or become alert to hostility towards me, my body reacts on its own. Like an instinct?!! By the way I became 17 again.