Adjective: full of life
See also: alert, alive, animated, bouncing, bouncy, breezy, bright-eyed [informal], bright-eyed and bushy-tailed [informal], bubbling, bubbly, burbling, burbly, effervescent, effusive, energetic, frothy, full of beans [informal], gushing, life, live, liveliness, peppy [N. Amer, informal], rested, scintillating, sparkly, spirit, spirited, sprightliness, swinging, warm, watchful, zippy [informal]