updated 02/19/2014 AT 12:00 PM ET
•originally published 02/20/2014 AT 8:00 AM ET
But the changes haven’t just been physical.
Lately, the Olympic icon-turned-reality TV star, 64, has been reconnecting with his children from his first two marriages.
“He’s really embraced his old family and friends that he hasn’t seen for years,” his daughter Cassandra Marino, 33, tells PEOPLE. “It’s great.”
As for his outward transformation, which includes longer hair and a controversial “tracheal shave” to reduce the size of his Adam’s apple, Marino says she has not discussed the changes with him but is supportive.
“It’s his life, and whatever he wants to do, he wants to do,” she says.