Full of beans

"What do you mean by the expression 'Bucks you up'?" "Well, makes you full of beans, you know. Makes you fizz." "I don't understand a word you say. You're English, aren't you?"

Source: wiktionary

Irwin's friend Chris White reflected on a friendship that began in 1975. . . . "Full of beans, full of life, gung-ho, fearless, tenacious at anything he attempted."

Source: wiktionary

"The antibiotics are working a treat and he's full of beans. Too many beans, actually. He's asleep now." She gestured to the chaos of the sitting room.

Source: wiktionary

Anybody who tells you that they know what today's readers want is full of beans.

Source: wiktionary