(slang) (of person's constitution and health) full of strength and energy; to be fit as a fiddle
Definitions (粵典–words.hk)
形容詞
好有精神、活力 full of spirit; full of energy
細路仔龍精虎猛紮紮跳先正常加嘛。
细路仔龙精虎猛扎扎跳先正常加嘛。
sai3 lou6 zai2 lung4 zing1 fu2 maang5 zaat3 zaat3 tiu3 sin1 zing3 soeng4 gaa1 maa3. It's normal for children to be full of spirit and jump around.