pump someone up
pump (someone or oneself) up
To increase someone's or one's own excitement, confidence, or mental preparation. The coach pumped us all up just before we headed out onto the field. I was pretty nervous before the test, so I took a few minutes to pump myself up before I started.
pump (someone) up
tv. & in. to excite someone; to make someone enthusiastic. The coach gave a pep talk to pump the players up for the big game.