Earlier this year, host Kathryn Thomas brought Operation Transformation back to our screens once again with the help of her team of experts: fitness coach Karl Henry; principal clinical psychologist Dr. Eddie Murphy; dietitian Aoife Hearne and general practitioner Dr. Sumi Dunne.

As always, over the course of the series, the experts will be giving the nation the tools they need to get moving, lose weight and feel great while our five leaders inspire the nation to dig deep and find the will power to chase their fitness and health goals.

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Of course, one of the biggest challenges that faced both the show this year was the potential of COVID affecting any of our leaders during the filming of the show.

So, while Andrew Burke Hannon, Paul Devaney, Hazel Hartigan, Sharon Gaffney, and Susuana Komolafe were chosen for OT 2021, five more amazing people were chosen to follow and embrace the plan so that they were ready at any moment to step in if another leader had to step back.

These unsung heroes are the Transforming 5, celebrating our leaders' successes while striving to transform their own health from behind-the-scenes. Check out their first week on the plan in the video above and click through the gallery to see your other leaders!