PWT's vocalist and songwriter Tom Higgenson told Alternative Press magazine why this song nearly didn't make it onto The Wonders of the Younger: "'Last Breath' is a hopeless song about a relationship that sucks the life right out of you. The relationship started out great, but now it's a struggle to get back to those good times. This song was so dark and personal that I actually didn't want it on the album. Tim [Lopez, guitar] loved it, and he got everyone else in the band on board. Reluctantly, I gave in and agreed to record it, fighting and bitching the whole time about how it didn't belong on the record. I don't usually admit this, but I was wrong."