I think if you exercise your state of mind - my state of mind - is usually more at ease ready for more mental challenges. Once I get the physical stuff out of the way it always seems like I have more calmness and better self-esteem.
It's a very complex scenario and certainly Dave was and is not the only...
My Daddy liked physical fitness and wanted me to be a prizefighter.
And now I have a big house nice clothes and I travel in first class and I love it so maybe it's time to enjoy being a star.