So when I checked what consumed my battery life last night it was YouTube. How or why did it keep running in the background after I got out of the app? Is there a way to ensure that YouTube won't do this again. It freaked me out at first because my Nexus 6p is brand new as I just purchased it new in box two days ago. I just don't want you encounter any of these battery issues that I've read about. Do I need to go into the YouTube app and hit force stop tonight before I go to bed? How exactly does one kill an app from running in the background?