Practice Theory and International Relations will challenge all you’ve come to know about the practice turn in international relations. It will ask you to question how you define practices and call for more precision. It will challenge your starting point of ground-up actions in everyday life and look at practices from above. It will push you to rethink your empirical methodology and call out sociological approaches as misconceived. And yes, it will ask you to reread Hegel and bring philosophy back in to your practice theorising. In short, it will make a lonely, and for many, unwanted call for a U-turn in the field. In this review, I’ll take up this call for a U-turn back to philosophical foundations, and ask what is gained and what is lost in rethinking practice theory from a philosophical perspective.