rejuvenate

(verb) cause (a stream or river) to erode, as by an uplift of the land.

(verb) develop youthful topographical features. Example: "The land rejuvenated."

(verb) make younger or more youthful. Example: "The contact with his grandchildren rejuvenated him."

(verb) return to life; get or give new life or energy. Synonyms: regenerate, restore. Example: "The week at the spa restored me."

(verb) become young again. Example: "The old man rejuvenated when he became a grandfather."