Excessive Server Executions

I have noticed in the past few days a drastic increase in server executions. It started on Tuesday, 2/24/2015. I downloaded the raw access files and noticed round the clock accesses by ES on my staging site which I have set up with SiteGround to test ES. See attached pic. All of these accesses were from the same IP address. My IP address. They all occurred in a 60 second time frame, but it goes on and on. I have ES open in a browser, and I am logged in. (I have also noticed that Joomla is not logging me out when the session should time out, which is set to 30 minutes.) These accesses are occurring in the middle of the night when I am not active on the program. Can you explain what these accesses are?