The Fourfold Axis: Body, Breath, Attention, Space. A mindfulness method for ADHD and autism that starts from the body, with breathing rhythms, Tai Chi, chanting and a free 11-chapter workbook you can read or listen to.
Parts of the method draw on 37 published studies, each with what it found and what it did not show — see the scientific basis. The method as a whole has not been studied yet.