Methodology for developing flexibility in middle school-aged children in physical education classes

This scientific article is devoted to the description of the content of the experimental methodology for the development of flexibility in children of secondary school age in physical education lessons. In middle school age, puberty begins, which entails a natural regression in joint mobility. Insufficient mobility in the joints limits the level of manifestation of force, negatively affects speed and coordination abilities. The article presents materials for using the developed stretching exercise complexes for secondary school children for each section of the physical education lesson.