The research aims at: - Developing a mental training program that helps in developing the level of mental perception of students in the gymnastics lesson. - Revealing the effect of the proposed program for visual mental visualization on the development of self-efficacy and mental visualization of students in the gymnastics lesson. - Revealing the effect of the proposed program for men... https://lecoureures.shop/product-category/course-a-pied-homme-vetements-manteau-duvet/