The chest so exercis’d improves its strength; 75
And quick vibrations thro’ the bowels drive
The restless blood, which in unactive days
Would loiter else thro’ unelastic tubes.
Deem it not trifling while I recommend
What posture suits: To stand and sit by turns, 80
As nature prompts, is best. But o’er your leaves
To lean for ever, cramps the vital parts,
And robs the fine machinery of its play.
’Tis the great art of life to manage well