Regular meal timing and avoiding between-meal snacking prevent fatigue and sickness.

Original passage

Regularity in eating is of vital importance. There should be a specified time for each meal. At this time let everyone eat what the system requires and then take nothing more until the next meal. There are many who eat when the system needs no food, at irregular intervals, and between meals, because they have not sufficient strength of will to resist inclination. When traveling, some are constantly nibbling if anything eatable is within their reach. This is very injurious. If travelers would eat regularly of food that is simple and nutritious, they would not feel so great weariness nor suffer so much from sickness.