Green’s Dictionary of Slang

air it out v.

[? pun on SE wear it out]

(US) to expend energy.

[US](con. 1964–8) J. Ellroy Cold Six Thousand 156: They whopped his ribs. They whopped his knees. They aired it out good.
Houston Chronicle 17 Sept. 🌐 [headline] Offenses yet to air it out vs. Cougars.