Michael Phelps in "Retirement"

OK - the Trials have just begun and the Olympics are a mere weeks away. Michael Phelps has said this is his last Olympics and he'll retire from swimming after this event. So => What do you think he'll probably do? Right now he trains by swimming at least twice a day and probably lifts weights too. So - will he probably take a week off after the games and not swim? A month? Longer? What do high-profile swimmers like this do when they retire. I know Rowdy Gaines is a champion masters swimmer but I'm just curious what happens. I'm guessing he'll have to stay in some kind of shape to work on his foundation and attend public appearances.