Verb perk up has 2 senses
  1. perk up, perk, percolate, pick up, gain vigor - gain or regain energy; "I picked up after a nap"
    --1 is one way to recuperate, recover, convalesce
    Sample sentence:
    Somebody ----s
  2. stimulate, arouse, brace, energize, energise, perk up - cause to be alert and energetic; "Coffee and tea stimulate me"; "This herbal infusion doesn't stimulate"
    --2 is one way to affect
    Sample sentences:
    Somebody ----s
    Somebody ----s something
    Somebody ----s somebody
    Something ----s somebody
    Something ----s something