The presentation, based on topical research studies of the author, introduces critical approach-es to studying men, masculinities, and men´s practices as a way to analytically grasp intersec-tional inequalities. As a sociologist herself, she thematises men, masculinities, and men´s practices in research studies explicitly as gendered categories inspired by feminist theory and CSMM (Critical Studies on Men and Masculinities). The topics covered include men in envi-ronment protection, men on parental leave and at childbirth, men as chief physicians in ma-ternity hospitals, and most recent two studies, men as perpetrators of sexualised violences and an ongoing study into the intersectionality of gender and age in aging men. Let us discuss this puzzle together.