The health of the unborn should be ensured. Many diseases
usual in children may be avoided by isolation and disinfection.
An equable temperature should be maintained. Regular and
various mental labour is a benefit. Physical exercise
should be moderate. The passions should obey the reason.
Alcohol and tobacco are harmful. Opium, and other narcotics
should be shunned. Not too much meat. Water the natural
beverage. Air should be pure and not damp. Rest and recreation
gainful. Idleness injurious. Sleep should be adequate. 137