Being a flexible person since childhood (doing dancing or gymnastics from the age of 2-3) does not remember being flexible and perceives the flexibility of the body as the norm and, often, such trainers injure their students, not calculating the tension force for a non-flexible person with his non-plastic body. Students who were traumatized in the past during such trainings often come to classes to recover and try again their luck in stretching with me, and this is what they are doing now. Who wants to try to study with me on Skype, the first online training on Skype for almost nothing details here: flexderek.com/stretchingonline/