Mary Lou Retton feels grateful to be alive after a harrowing ordeal.

The legendary Olympian is speaking out on-camera for the first time about battling severe pneumonia that landed her in the ICU last fall.

"I am on oxygen," Retton, wearing a nasal cannula, told Today's Hoda Kotb in an interview, part of which was released Jan. 7. "I am so grateful to be here. I am blessed to be here, because there was a time when they were about to put me on life support."