Thoroughly warmup before you do this. The point of this breath control exercise is to be able to say the entire piece below in 1 breath. Work up to it by doing 1 breath per stanza, then 1 breath for 2 stanzas, etc.  When you’ve mastered it, move on to “The Modern Major General”. You can speak only as well as you breathe. Control your breath, and you begin to control your speaking voice.

Fear no more the heat o’ the sun,
Nor the furious winter’s rages;
Thou thy worldly task hast done,
Home art gone, and ta’en thy wages:
Golden lads and girls all must,
As chimney-sweepers, come to dust.
Fear no more the frown o’ the great,
Thou art past the tyrant’s stroke;
Care no more to clothe, and eat;
To thee the reed is as the oak:
The sceptre, learning, physic, must
All follow this, and come to dust.
Fear no more the lightning flash
Nor the all-dreaded thunder-stone;
Fear not slander, censure rash;
Thou hast finished joy and moan:
All lovers young, all lovers must,
Consign to thee, and come to dust.

“The Modern Major General”, from Gilbert and Sullivan’s Pirates of Penzance