Im assuming you sent to Settings>Apps>running, but after that where did you look to see who if anyone was syncing?
No I went to main menu for apps, opened each app and the went in to each individual apps settings, usually the three little dots and checked for updates / sync and evaluated how often I really needed things to update. Did I really need things up dating every 15 minute or would an hour or update on opening work. I probably had at least 20 apps updating hourly or less. Most of them I just set to update on opening.
I don't really us google plus so I just signed out. Facebook I just have updated on opening. I shut off all GPS and location services. I might turn one back on just to see how it impacts battery life.
