Celebrity PT Gunnar Peterson has trained and shaped the bodies of Jennifer Lopez, Sofia Vergara and the Kardashians to name a few. His new gig: F45’s Chief of Athletics. So, what’s the secret to his success in the gym? He tells all…

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To hear today's full interview, where Gunnar shares his favourite celebrity to train...search for Extra Healthy-ish wherever you get your pods.

Find out more about F45 here. Or for Gunnar, see his website or follow him on Instagram @gunnarfitness.

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