Olivia Rodrigo is taking preparations seriously ahead of her "Sour" tour, which will be the first of her solo music career.

She recently told Variety that she's excited to see "how the music affects people in real-time" and her schedule has been packed with rehearsals.

"Yesterday, I actually ran on the treadmill and sang my songs, because sometimes when you're running on stage you get really winded. I did such a bad job running on the treadmill, it was so hard," she said. "I feel so sorry for my friend that had to listen to me while I did that because I sounded terrible."

Rodrigo, 19, initially rose to fame on Disney Channel's "Bizaardvark" before landing a lead role on the Disney+ series "High School Musical: The Musical: The Series." She broke onto mainstream radars with "Drivers License" last January, a blockbuster breakup ballad that was ranked No. 2 on Insider's best songs of 2021.

Her debut album "Sour" followed in May. It received rave reviews and debuted atop the Billboard 200.

Rodrigo's documentary "Driving Home 2 U" is set to premiere Friday on Disney+. The film includes old footage from the "Sour" studio sessions, as well as live performances of its 11 songs with all new arrangements.

"I really wanted to make this film for my fans, and especially my fans who maybe couldn't come to my tour this go around," she told Variety.

"Obviously, the songs from 'Sour' completely have taken on a whole new meaning and they kind of have a life of their own now, which I think is just a natural thing that happens when you put out music," she added. "But it was really cool to go back and revisit the songs when they were just seeds of an idea, and they hadn't become what they are today. [It] just kind of reminded me about the magic that songwriting is."

All 48 stops on Rodrigo's tour rapidly sold out. It kicks off on April 2 in San Francisco.