She's at her best when 'the heat is on'. [=when she feels a lot of pressure; when she needs to finish something quickly]
She said things in 'the heat of the moment' [=when she was angry for a short period of time] that she later regretted.
The company has 'turned up the heat on' [=has put extra pressure on] its employees to finish the job quickly.
(..) but just listen to me for seconds i saw Lori leaving the apartment with Rex what? im serious John. i went over to talk to her, maybe take some of the heat off you and there he was, picking her up they were going to the hatshell your fucking unbelievable you know that i mean how stupid do (..)2012 Ted