When you have the likes of Liam Hemsworth and Sam Claflin standing next to you, you have to be able to keep up. I’m the kind of person who gets a kick out of physical exertion, when the endorphins kick in. You really feel like you’ve pushed your body and that’s quite refreshing in a role. Especially when I’d been playing Margaery Tyrell for the six months previously – sitting around, talking machinations in a silk skirt.