Champion Marchand is back and chasing more world records

Leon Marchand's life changed drastically after winning four gold medals a year ago at the Paris Olympics. He was a national hero and had to adjust — particularly when he was at home in France.

"I have to plan things," Marchand explained Saturday. "I can't just go on my own to the city and just go get bread."

"I know how to say 'no' better," he added. "It gets a lot more peaceful when I travel out of France."