Physical Education (PE) plays a crucial role in students’ overall development by engaging them in physical activities. PE teachers should find attractive and challenging activities that engage students in physical activity in a meaningful manner. The integration of immersive technologies, such as Augmented Reality (AR) and Virtual Reality (VR), has shown significant promise in enhancing student engagement and performance in PE. This paper investigates the effects of an AR-based intervention involving 22 elementary students in circuit training, utilizing a mixed methods approach. Quantitative data validated existing research by confirming the physical, psychological, cognitive, social, and attitudinal advantages of AR, while qualitative insights from a focus group of eight students provided deeper analysis of their experiences. The findings revealed that AR enhances student engagement, motivation, and confidence and lead to positive attitudes toward physical activity both in and outside the classroom. The immersive technologies encouraged skill development, teamwork, and self-efficacy, contributing to a comprehensive approach to student development. These results suggest that AR can serve as a valuable tool for PE teachers, helping students build confidence in designing and adapting fitness plans, thereby supporting a life-long commitment to physical activity and health.