SIR Chris Hoy has announced he and wife Sarra Kemp are to become parents for the first time.

But Britain's most successful ever Olympian has admitted he could only face the rigours of parenthood now he has retired from the track.

The six-times Olympic champion told Sky: "Everybody I speak to when I ask about them and their experiences about becoming a parent, they mention lack of sleep, which I'm not great with so that'll be a big challenge.

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"I think maybe I'm just blindly optimistic that it's going to be great fun and dead easy. I'm sure it won't be, I'm sure there'll be lots of tough things but I'm just very excited.

"It all seems to have happened at the right time."