Have you ever thought about taking your HITT workout into water? Aqua fitness instructor Mark Grevelding is creator of the app, Poolfit, and says adding water to your workout is perfect for increasing fitness, endurance and strength in the summer. He tells us how to go about it...

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To hear today's full interview, where Mark talks more about the benefits of working-out in water vs on land...search for Extra Healthy-ish wherever you get your pods.

Find out more about Poolfit, here, or via Instagram @poolfittv. 

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