This book provides a timely and essential exploration of masculinity and boyhood in the contemporary online and offline world. It critically examines the pressures faced by young men and boys, unpacking themes such as mental health, sexual behaviours and violence, while offering practical strategies for policy makers, educators, professionals, parents/carers and families. Through detailed analysis of her research, theory and professional experience, the author highlights how traditional, monolithic and rigid views of masculinity are contributing to poor outcomes for young men and boys. This book maps the historical and cultural evolution of masculinity, scrutinising the influence of patriarchy, online subcultures, and dangerous role models. It sheds light on the rise of movements like the manosphere and Incel culture, while also tackling issues such as the impact of social media, sexting, and pornography on identity formation. The book focuses on the lack of youth voice in shaping sex and relationships education and the urgent need for reframing masculinity to foster more inclusive, supportive environments for boys and young men. Drawing from a series of research projects that she has led, the author places the lived experiences of young men and boys at the centre of the conversation. It calls for a shift in societal perceptions and offers a framework for reframing masculinity in ways that benefits all genders. Clear, grounded in research, and rooted in practice, this book is a crucial resource for those seeking to understand and transform how masculinity is constructed and how it can be reimagined for healthier futures.