Full of pep and vitality; lively and spirited (emphasizes a buoyant, vigorous energy).
面接で彼女は元気はつらつと自己紹介した。
She introduced herself at the interview with lively enthusiasm.
朝のラジオ体操でみんな元気はつらつになった。
The morning radio exercises got everyone feeling lively and full of energy.
あの会社の宣伝は中高年が元気はつらつに見える写真を使っている。
That company's ads use photos that make middle-aged and older people look lively and vigorous.