Morning gang, here is a really intelligent coach, therapist and author who talks about how some people really struggle with being totally engaged during rehab or a training session. Definintely rings true and makes you think if it is you that he is talking about. Give it a watch and perhaps you will have new awareness for your next session!!
https://www.youtube.com/watch?v=ilWQg7JKiaw
To read more about Gray check out this link