The secret to the success of Zenyatta is out!

The mare who is 19-19 and is favorite to win Saturday's Breeder's Cup Classic loves a pint of Guinness after her exercise routine every day.

Trainer John Shirreffs revealed the Zenyatta secret on '60 Minutes'on Sunday night.

Guinness used to have the slogan 'Guinness is Good for You.'

In the case of Zenyatta nothing could be more true.

She won last year's Breeders Cup with her patented late stretch move and she has remained unbeaten this year too.

While her main rival last year Rachel Alexandra is not as good this year, Zenyatta has gone form strength to strength.

But will have her hands full against top male horses on Saturday.

That is where the Guinness may well come in -- it will surely help her get up in the last stride or so.

Or as Zenyatta might say 'My Goodness-- My Guinness"