I have watched Dr. Berg for a few months, as his videos showed up on my Facebook feed, discussing IF. I find him to be informative, easy to follow, and the short videos that cover a multitude of topics related to IF and health in general are a blessing for someone who does not want to go on and on and on about a topic. Get it said, get it said quickly, and let me move on. Dr. Berg does this, and his information is consistently well laid out.