Rangers are immune from intimidation but Celtic Trilogy will reveal who gets dizzy first - Hugh Keevins

Ange Postecoglou proved he had an ear for a soundbite, after Celtic’s Scottish Cup win at Tannadice, with his line: “It was all trouble now it’s all Treble”.

We know the Hoops manager has an eye for a player as well because his signings top the Premiership table.

Now we need to find out if Ange has a head for heights – because he’s about to face the Vertigo Trilogy against Rangers.

Don’t look down or you’ll be dizzy looking at three quick-fire derby games that will be asked to contradict the belief that you can get too much of a good thing.

Giovanni van Bronckhorst has shown he can work at high altitude too, having earned his wings by taking Rangers into the last-eight of the Europa League.

Now the clubs face not so much the hard yards as every inch being of critical importance over three circuits of their animosity.

And I’m talking about the fans, not the players.

I read the findings of a survey conducted by the reputable pollsters MORI last week and it made me think of the supporters.

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The report said 40 per cent of Scotland’s male population aged between 30 and 59 years were unable to get the recommended minimum amount of sleep per night due to stress.

I thought immediately of Celtic and