'''[[Exercise And Its Beneficial Role In Nutrition And Digestion|-Previous-Lesson 17-]] | -PDF pages 395-417- | [[Life Science Health System - T.C. Fry|-Table of Contents-]] | [[Ascertaining The Human Dietetic Character, Part II|-Next-Lesson 19-]]''' | '''[[Exercise And Its Beneficial Role In Nutrition And Digestion|-Previous-Lesson 17-]] | -PDF pages 395-417- | [[Life Science Health System - T.C. Fry|-Table of Contents-]] | [[Ascertaining The Human Dietetic Character, Part II|-Next-Lesson 19-]]''' |