SHE'S the online video sensation whose pre-race routine at the athletics world junior championships featured on Jay Leno and prompted a marriage proposal from a besotted fan.

One YouTube clip had more than 13 million views.

But there's much more to 19-year-old Australian hurdler Michelle Jenneke than a few sexy moves before a race in Barcelona

In fact, according to her mother Nicky, she doesn't know what all the fuss is about.

"She's been doing this the last three years. She doesn't get nerves before a race, she just gets very excited," Nicky said.

"Even before she raced Sally Pearson (at last year's Australian championships, where she finished third) she did this full 360-degree spin," Mrs Jenneke said.

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Offers have been flooding in for the Sydney girl who trains at the Cherrybrook Athletics Club under the guidance of Mick Zisti but everything can wait for now as she completes a European holiday.

"She's got to decide if she wants a future in athletics. It's just one of the many things she does in life," Nicky said.

Jenneke is not just blessed with beauty and a bubbly personality.

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This year she deferred a course in mechatronic engineering at Sydney University, a combination of mechanical and electrical engineering.

Her heart is in the right place, too, and she will head to Tanzania later this year for three months as a volunteer with International Volunteer HQ.

Originally published as She's just excited: hurdler's mum