Lyrics like "I'm holding on / Why is everything so heavy?" highlight the frustration of knowing a problem is internal but being unable to let it go. Musical Style and Collaboration

The song is an introspective look at , specifically the feeling of being overwhelmed by one's own thoughts and past mistakes.

Released in 2017 as the lead single from Linkin Park’s seventh studio album, , " Heavy " marked a significant and controversial stylistic shift for the band. Featuring pop singer Kiiara , the track traded the band's signature nu-metal and alternative rock sound for a stripped-back, electro-pop production. Core Themes and Lyrics