perk up

Verb	1.	perk up - gain or regain energy; "I picked up after a nap" Synonyms: gain vigor, perk, percolate, pick up
	2.	perk up - cause to be alert and energetic; "Coffee and tea stimulate me"; "This herbal infusion doesn't stimulate" Synonyms: energize, energise, stimulate, arouse, brace

convalesce, gain vigor, percolate, perk, pick up, recover, recuperate