元げん気きいっぱい

na-adjective, noun which may take the genitive case particle 'no', adverb, noun

full of energy; brimming with vitality; very healthy

Describes a person or living thing that is visibly energetic, lively, and in good health. Often used in everyday speech to emphasize high spirits.

• 子こ供どもたちは元げん気きいっぱいで公こう園えんを走はしり回まわっている。

  The children are running around the park full of energy.

• 今日きょうは元げん気きいっぱいだね。

  You're brimming with energy today, aren't you?