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Porter, The Catechism of Health, Philadelphia, Literary Rooms, 1831.
Active exercise is that species of bodily activity produced b the natural actions of the limbs.
Passive exercise is that motion which is excited in the body by external means.
Regular bodily exercise creates a healthy appetite, invigorates the powers of digestion, and of the system generally, causes sound and refreshing sleep, a freshness of complexion, cheerfulness of the spirits, wards off disease, & tends to preserve the vigour of both mind and body to an advanced age. Regular brisk exercise during the winter season preserves the warmth of the body, and renders it less susceptible to the influence of cold, and less dependent for its comfort on artificial heat.
Walking, running, and leaping, riding on horseback, gardening & certain agricultural employments, riding in a carriage, dancing, swimming,
Porter, 51, 54-56.
Early in the morning, and towards the close of the day.
Exercise should not done to the degree to produce a feeling of lassitude or fatigue but a slight degree of weariness is desirable.
ACSM American Fitness Index
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