吐(は)く息(いき)exhaled air, one's breath

フーッと吐(は)く息(いき)が聞(き)こえました。

You could hear the exhaled air. {exhaled air, one's breath}

大(おお)きな吐(は)く息(いき)の後(あと)に彼女(かのじょ)は息(いき)を吸(す)った。

After a big exhale, she inhaled her breath. {exhaled air, one's breath}

吐(は)く息(いき)も吸(す)う息(いき)も大(おお)きくなるのが深呼吸(しんこきゅう)である。

Deep breathing is when both the air you exhale and the breath you inhale become larger. {exhaled air, one's breath}

深呼吸(しんこきゅう)をするとき、吐(は)く息(いき)に意識(いしき)をすると良(よ)いそうです。

It is said that when taking a deep breath, it's good to be conscious of one's exhaled air. {exhaled air, one's breath}

しっかりと吐(は)く息(いき)を大(おお)きくすればこそ、大(おお)きく息(いき)を吸(す)い込(こ)めるのだ。

Only by exhaling one's breath firmly and largely, can you inhale deeply. {exhaled air, one's breath}