I was a DB at Texas from 1998-2001, and the President (then governor) would work out in our weight room every morning when it opened at 6:30 (the best large gym in the area that the USSS could easily secure). Since I was balancing football, ROTC, 15+ hours of school, and a hyperactive social live, that was the only time during the day where I could get my weights in. "W" and I were basically lifting partners for the better part of a year. He knew my dad through some of his oil field connections, so we had plenty to talk about.
I was a government major, so it was pretty cool to talk to him first thing in the morning after his debates then go to an 8:00 "Politics and Communication" class. It was like having cheat notes when the prof would ask "What do you think the governor was thinking when he said ______." If someone would disagree with my analysis, I had a pretty funny trump card. "Well, 45 minutes ago, when we were talking about it in the weight room, he told me exactly what I just told you."
I feel pretty safe making the prediction that after his presidency is over, you are not going to see "W" meddling and sticking their nose into current business like Carter and Clinton have. He is going to go back to his ranch in Crawford (or his place next to Tom Hicks' spread in Dallas) and start counting grandchildren.