Three principal points in the manner of taking exercise should be attended to:

  1. The kind of exercise.
  1. The proper time for exercise,
  1. The duration of it.

With respect to the kinds of exercise, the various species of it may be divided into active and passive. Among the first, which admit of being considerably diversified, may be enumerated walking, running, leaping, swimming, riding, fencing, different sorts of athletic games, &c. Among the latter, or passive kinds of exercise may be comprised riding in a carriage, sailing, friction, swinging &c.

1746. Active Exercises

Active exercises are more beneficial to youth, to the middle-aged, to the robust in general, and particularly to the corpulent and the plethoric.

1747. Passive Exercises