Dic: beef something up

• Both sides are still beefing up their military strength.
• a beefed up police presence.
• Let's beef this music up with a little more on the drums.
• They beefed up the offer with another thousand dollars.

1. PHRASAL VERB | If you beef up something, you increase, strengthen, or improve it.
2. to add strength or substance to something.

... Cobuild, http://idioms.thefreedictionary.com/beef