VIGOROUS

adj. energetic, active, vivacious, dynamic, brisk, lively, spirited, robust, strong, hardy, hale, hearty, vital, fit, lusty, stalwart, in good or fine fettle, spry, sprightly, resilient, Colloq peppy, full of pep, full of get-up-and-go, full of beans At 63, he is just as vigorous as he was at 40