This work aims to provide a non-moralistic exploration and understanding of the high prevalence of adolescent pregnancy and resulting motherhood among low-income adolescent women in Greater Mendoza, Argentina. The study acknowledges that, based on official statistics, adolescent pregnancy remains a significant issue within this social group compared to teenagers from other socioeconomic backgrounds. By delving into the sexual and reproductive practices of these adolescents, the research seeks to uncover their life strategies within the context of their challenging living conditions, characterized by limited job opportunities and an inadequate, reactive educational system. Through in-depth interviews and focus groups, the study captures the lived experiences and perspectives of adolescent mothers themselves. Utilizing a sociological analysis of this empirical data, the research argues that in the face of extreme social exclusion, a lack of family support, and limited cultural capital, the concept of "class 'habitus'" sheds light on and explains the adolescent practices that contribute to not avoid pregnancies, often influenced by traditional societal expectations of women's roles.