The Study-into-Action process brought men together to build our capacity, individually and collectively, to take effective action to challenge male supremacy – in our intimate relationships, our organizing work and society as a whole. In support of such action, we designed the Study-into-Action around three core themes: an intersectional analysis of systems of oppression, a Transformative Justice framework for addressing harm, and a somatic methodology working to shift not only our consciousness but how we organize our entire being, including emotions, sensations and embodied practices. Here we share a detailed description of our preparations for, and implementation of, the Challenging Male Supremacy Project’s Study-into-Action process.