Ese ae well: back, so “that the
lower back is comfortably supported by the back
of the chair. Sit with the spine erect, and the
head and upper body in good balance; keep both
feet on the floor, Figure A.

In an overstuffed chair, avoid slumping on
the end of the spine, with the lower back sagging,
as in Figure B. When leaning forward, bend from
the hips, keeping the back straight; do not bend
the back as in Figure C. And avoid the too com-
mon contortions in Figure D, which throw the
weight-bearing system badly out of line.

Correct sitting posture may. be impossible
in a poorly designed chair. Office workers and
those who spend long hours sitting down should
make sure that their chairs give proper support
where it is needed, particularly to the lower back °
and thighs. A good chair will pay for itself in
comfort and efficiency.

ae — Approximately one-third of
your life is spent in bed. Sagging springs, like
those in Figure E, can cause serious trouble; many
cases of back pain have been cured simply by
putting a board under the springs! The best type
of bed is one with box springs or an innerspring
mattress, giving equal support to all parts of the .
body, as in Figure F.