Efficacy: Essentially this means results. Are you getting the results you want out of your fitness program. Chris just took his L1 again this past weekend. First time since 2007 where he has sat on the other side of the seminar. The question that came up this week is exactly what is mentioned above. How well does CrossFit work for you? It’s a different answer than some may think with the background Chris has and trying to define and navigate our way though it is important.