ihn

Bianchi, Leonardo-=Foundations of Mental Health, Translated by
Barricelli 1930, Chap. II, pp 57-134

Williams--Your Mind and You (National Health Series)

U.S. Public Health Service--Mental Hygiene Bulletin #148

Gulick, Luther H.--A philosophy of Play

American Playground and Recreation Association, saeammaiataleaied #89, Play
an Antidote to Civilization

Williams, F.E.--‘ental Hygiene and the College Student (1927) National
Committee for Mental Hygiene

*virkpatrick and Huettner--Fundamentals of Health (1931), pp 354-385

*Reauired

VIII. REST, The sixth determing factor in Constructive Hygiene

Ae

Be

Ce

INTRODUCTION

Two forms of activity have been discussed above: work and play. There
are two important forms of inactivity; rest and sleep. Rest is natures
provision to satisfy a biological recuisite to the production and main-
tenance of physical and mental health. Evidences of fatigue, of rest,
balance, or equilibrium, between the "tearing down" and building-up
processes, a phenomenon in living organisms; rest necessary to health;
chronic fatigue the bane of civilized man.

THE PHYSIOLOGY OF REST

le Absorption by osmosis and diffusion: changes during rest.

2. Anabolism, or building up by chemical synthesis: construction dur-
ing rest.

3. Katabolism, or breaking down by chemical disassociation: reduction
during rest.

4, Excretion, or removal of wastes by osmosis and diffusion: effects of
reste

De Effects of accumulating metabolites (wastes) on the "irritability"
of tissue cells during activity; restoration of "irritability"
during rest,

6. Need for lowering cell activity through rest; the elimination of
wastes; restoring irritability of cells through "building-up"
process during rest.

FATIGUE: CAUSES = Activity; CURE = Rest.
1. Fatigue, The result of cell activity. This condition caused by:

a. Exhausting materials faster than supplied to tissue cell; when
expenditure exceeds income result is bankruptcy.

b. Breaking down process through activity produces excretions
faster than they can be removed; accumulated wastes lower work-
ing power.

ce Exceretions from the cell have toxic, or depressing, effect upon
cells.

2. Effects of fatigue upon tissue cells.
ae Upon structure ~ nerve; muscle, gland cells

be. Upon functions of these cells - nerve; muscle, gland.