Won't be out too long. Everyone's recovery time is different but fitter you are the better. Few months max then introduce it bit by bit again. Yes, they need you awake so heart is in as normal state as possible but heavily seduced, never felt a thing and seemed like only 5 mins I was there. I was telling the nurse I was defibrillator trained if she needed a hand ffs. Best decision you will ever make. No regrets , get it done