I have no idea how but for two days this week my back has been so bad I looked like a ship listing to one side when I walk , just crazy and then do not even get me started on my shoulder not even sure why that is I will balme Master Cavaos if for the burpees, lol it was not him but need to balme someone. Anyway it is hindering my training and that is jsut not good for me at all. We will keep working on forms and self defense.