Celeb trainer Gunnar Peterson is one of the most in demand trainers in Hollywood, working with the likes of Khloe Kardashian, Kate Beckinsale and Jennifer Lopez (to name only a few).
He's also added another high-profile partnership to his resume, teaming up with Chris Hemsworth and Elsa Pataky to contribute a 4-week women's workout to their app, Centr.
The app draws on the fitness, nutrition and lifestyle experts the couple have on speed dial so you can get in shape with world class experts via your phone. As a sneak peak Peterson has shared a full-body workout and trust us, despite the title, it's no joke.
Ready to get sweaty? Get yourself a pack of cards and follow the instructions below.