The 20-year-old says he will retire from pop music because his knees become sore after long nights on stage.
Niall said: “Mick Jagger does it but I don’t think at the moment I’d be able to.
“I’ve got dodgy knees.”
Last year, Horan had an operation for torn ligaments after dislocating one of his joints playing football.
The Irish singer admitted in the spring that the injury was playing up during One Direction’s Take Me Home tour.
However, Niall is not planning on giving up his music career right now and is loving being on tour with the rest of the band.
Horan, Zayn Malik, Louis Tomlinson, Liam Payne and Harry Styles are currently in Australia on the final leg of their eight-month tour.
He tweeted: “Ah Melbourne dearest! I love you soo much! Thanks for another great night in Melbs! I call it that coz I live here ;).”
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