Reflexology Trial", Simon Singh states that if indeed the hands and feet "reflect" the internal organs, reflexology might be expected to explain how such "reflection" was derived from the process of Darwinian natural selection; but Singh says that no argument or evidence has been adduced. In the United Kingdom, reflexology is coordinated on a voluntary basis by the Complementary and Natural Healthcare Council (CNHC). Registrants are required to meet Standards of Proficiency outlined by Profession Specific Boards, but since CNHC is voluntary anyone practicing can describe themselves as a reflexologist. When the CNHC began admitting reflexologists, a skeptic searched for, and
Manual therapy Manual therapy Manual therapy, or manipulative therapy, is a physical treatment primarily used by physical therapists, physiotherapists, occupational therapists, chiropractors, massage therapists, athletic trainers, osteopaths, and physicians to treat musculoskeletal pain and disability; it most includes kneading and manipulation of muscles, joint mobilization and joint manipulation. A 2011 literature review indicates that placebo is one of likely many potentially relevant mechanisms through which manual therapy improves clinical outcomes related to musculoskeletal pain conditions. Irvin Korr, J. S. Denslow and colleagues did the original body of research on manual therapy. Korr described it as the "Application of an accurately determined and