Upton Sinclair,
Good Health and How We Won It, With an Account of the New Hygiene
“ Arm extension forward, breathing deeply with arms carried sideward and backward, at shoulder height. If those who exercise in their rooms will be careful to breathe only through the [Pg 238] nose and will keep the head erect, they will find that the performance of almost any set of exercises will serve also as breathing exercises, since they will increase lung activity. ”
