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Have you ever wondered what Katy Perry eats? In a recent interview with Rolling Stone about her upcoming world tour, Perry revealed she’s basically on a diet, except for on Sundays when she eats junk food. This is apparently how a famous pop star prepares for a world tour.

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“After this interview I’m going to have a nice healthy breakfast,” Perry said. “I’m on a meal plan, which absolutely sucks— but on Sundays I get to have a cheat day where I go buck wild and eat In-N-Out Burger. Then I’ll work out, go to a vocal lesson, run through the entire set at rehearsals, go to dance rehearsal until 10:00 p.m. and then go home and sort through e-mails concerning the production. I feel like I’m training for the Olympics!”

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It really is sort of like the Olympics since it’s Perry’s first-ever headlining arena tour. And it sounds like the singer has some big things in store for fans who manage to snag a ticket when they go on sale this weekend. “I just really want to raise the bar,” the pop star said of her tour. “Touring is no longer an ordinary thing where you play an instrument in jeans and a T-shirt. It has some pizazz these days, and I’m definitely bringing the pizazz with a lot of bells and whistles. The show has a Broadway feel to it. It’s got a storyline that’s going to be very interesting, kind of loosely based on my life, but a cartoon version.”

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The show will also involve something called smell-o-vision. “It’s the first concert that’s going to smell good,” Perry said. “It’s going to smell like you’re in cotton candy heaven. It’s a fun little nuance. I am a woman of detail, and you will be seeing that— even down to the 15 outfit changes I’m doing in concert.”

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Perry also (sort of) told Rolling Stone about her upcoming appearance on the CBS comedy How I Met Your Mother. It turns out there was an underlying reason she wanted to be on the popular sitcom. “I just did it basically because I’m obsessed with Neil Patrick Harris,” Perry admitted. “He’s really sweet, and the cast on the show was really nice to me and forgiving of my bad acting skills.”

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People will forgive anything if it smells like cotton candy.