Phelps returns to Michigan, his 2nd home

"It feels good to be back," he said Saturday. "It feels good to be back in the maize and blue."

The swimming superstar was honored with other Olympians with ties to the school before Saturday's football game against Wisconsin. He sported a Wolverines football jersey with his name and No. 8, representing the record-setting gold medals he won last month.

Phelps lived and trained in Ann Arbor after emerging as a star at the Athens Games in 2004 and returned to campus for the first time this week since leaving for workouts June 25.

"Everything has been pretty chill and low key," he said. "That's how it's always been here because this campus has so many high-profile athletes."

He has two tattoos--Olympic rings and a block 'M'--and says he chose the school's iconic symbol because Ann Arbor was the place where he experienced such firsts as washing dishes and doing laundry.

"Coming here and living here for four years taught me a lot, and I'm thankful for the experiences I had here because they changed my life," Phelps said. "I wanted to get that as a memory of something that really changed my life."

Phelps said he does look forward to slowing down back in his native Baltimore, where he will live and train for the 2012 London Games.

Phelps has traveled extensively since Beijing, going to London, being honored in a parade at Disney World in Florida, hosting "Saturday Night Live" and attending the MTV Video Music Awards.

Phelps said he has enjoyed each of his post-Beijing experiences, especially having actress Demi Moore introduce herself and invite him to dinner after MTV's award show.