One objective with some Stick Mobility exercises (e.g. the Bow & Arrow drill) is to create tension by flexing the stick. Excessive over flexion is not part of the training exercises and not required to achieve the benefits of the system. Although rare, excessive over-flexion of the stick can result in stick damage and breakage. Please follow the flexion examples from our training videos and/or the guidance of a Certified Stick Mobility Instructor.