Meaning of 意気込 in Japanese

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Definition of 意気込

いき(iki) 【意気 ·意氣】

(n) spirit; heart; disposition
その勝利で私たちのチームは意気が上がった。
Our team was in high spirits because of the victory.

いきごむ(ikigomu) 【意気込む】

(v5m, vi) to be enthusiastic about
初めから意気込みすぎると、途中で息切れするぞ。
You have to pace yourself or you'll choke halfway through.

いきごみ(ikigomi) 【意気込み】

Oh my. However much it's just a P.E. class; if you don't face it in real earnest, then when it comes to a real fight it won't do you any good.

初めから意気込みすぎると、途中とちゅうで息切れいきぎれするぞ。

You have to pace yourself or you'll choke halfway through.