The best six doctors anywhere And no one can deny it

The best six doctors anywhere
And no one can deny it
Are sunshine, water, rest, and air
Exercise and diet.
These six will gladly you attend
If only you are willing
Your mind they'll ease
Your will they'll mend
And charge you not a shilling.
~Nursery rhyme quoted by Wayne Fields, What the River Knows, 1990

True enjoyment comes from activity of the mind and exercise of the body; the two are ever united. ~Humboldt