enervated

active, dynamic, industrious, kinetic

avid, eager, enthusiastic, keen, lively, pumped, vivacious

cheerful, chipper, perky, up

agog, alert, awake, open-eyed, sleepless, vigilant, watchful, wide-awake

able-bodied, athletic, beefy, brawny, fit, husky, muscular, sinewy, strapping, virile

hard, hardy, lusty, red-blooded, robust, sturdy, tough

fortified, hardened, inured, strengthened, toughened

energetic, energized, invigorated, vigorous, vitalized

hale, healthy, sound

capable, competent

convalescing, recovering, recuperating