pump up

/P AH1 M P AH0 P/
verb
  1. 1

    To inflate by means of a pump.

  2. 2

    To inflate with a pumping action.

  3. 3

    To excite a person or group to a frenzy.

  4. 4

    To cause one's muscles to swell by means of focussed weightlifting.

Source: https://en.wiktionary.org/wiki/pump%20up