Dr Ross Walker joined Millsy & Karl on 6PR Breakfast to discuss how long you can be upside down after 30 people found themselves stuck upside down on a rollercoaster.

<p>Dr Ross Walker joined Millsy &amp; Karl on 6PR Breakfast to discuss how long you can be upside down after 30 people found themselves stuck upside down on a rollercoaster.</p>

If it's happening in Perth, you'll hear about it first on 6PR Breakfast with Millsy and Karl!

<p>If it's happening in Perth, you'll hear about it first on 6PR Breakfast with Millsy and Karl!</p>

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