Oh boy you are in for a treat. Essentially John Harvey Kellogg was really against masturbation or sex of any kind (He and his wife had separate bedrooms and it is believed he spent their honeymoon writing.) and thought the secret to a good life was eating plain food and good posture.

archive.org/details/plainfaorold00kell/…/2up archive.org/details/plainfaorold00kell/…/2up