Certain articles of diet are often strangely and unaccountably harmful to some.

Oysters are an almost deadly poison to certain constitutions; milk to others.

Cheese has produced the same effect, and even strawberries; yet all these are luxuries to the ordinary stomach.
Usually the thing to guard against most carefully is gluttony, so far as boys are concerned.

With girls the tendency often is to eat far too little.

A false delicacy, a feeling that paleness and fragility are beautiful and feminine, inclines the young girl often to eat less than she desires; and the stomach accustoms itself to the insufficient supply, till the reception of a reasonable meal is an impossibility.