Katy Perry can't resist lure of pizza

Singer Katy Perry, who tries to eat healthily on tour, says she cannot resist the lure of pizza when she sees others tucking in.

"At the beginning I brought someone out to make food that didn't have any dairy and very little gluten. But after a hundred shows I was like, 'Let's get pizza'," she said.

"I try and keep it healthy on the road but the crew always have pizza around, so I'm like, 'Give me a slice bro, I'll give you an extra hour's sleep if you give me a slice.'"

The 30-year-old pop star finds her backstage rider "boring" because it only features healthy treats, reports femalefirst.co.uk.

"We have healthy snacks. It's so boring. We have a lot of kale and a lot of dried fruits and probiotics," she said.

The "Dark Horse" hitmaker credits her high energy levels in her performances to the fact she always makes sure she gets a lot of sleep though she doesn't keep conventional hours.

"I sleep a lot. That's where I get my strength and rejuvenation. My operating hours are very strange. I'm a nine-to-five girl but not in a Dolly Parton way - I'm a 9 p.m. to 5 a.m. girl.

"I start my day about noon and end my day about 3 a.m. I press snooze for about an hour (when I wake up) - I'm such a horrible snoozer," she told Britain's OK! magazine.

"I usually do acupuncture or some kind of alignment and then I stretch and work out. I do my shower and my regimen, all my lotions and my potions," Perry added.