The Heart Is a Muscle
The title sounds like a slogan — the sort of thing stitched onto a pillow, or printed across the front of a gym shirt. Keep going. You’re stronger than you know.
It isn’t that song. It came out of what Dave Le’aupepe has described, without much decoration, as a complete collapse — a relationship ending, his faith unraveling, the early recording sessions for what would become Go Farther in Lightness going sideways in ways he couldn’t fully control. He was building something he wasn’t sure he believed in anymore, using tools he wasn’t sure still worked, and the song came out of that specific kind of uncertainty. Not despair, exactly. Something more honest than despair. The place you get to after despair, when you’ve been sad long enough that you start to notice the machinery of it.
The load-bearing detail in this song isn’t a lyric. It’s a biology lesson.
The heart, literally, is a muscle. It responds to stress by growing stronger — or it scars, and the scarring itself becomes structure, becomes the thing that keeps it beating. Cardiologists call the adaptive changes remodeling. The heart doesn’t heal the way skin does. It rebuilds around damage and keeps going. Le’aupepe is not using a metaphor. He is describing a physiological fact and asking whether it applies to grief, to faith, to love — whether the human capacity to feel things can be trained, can be worked, can be damaged and rebuilt and ultimately trusted again.
The song earns the right to that question by not answering it quickly.
Go Farther in Lightness came out in 2017 on Warner Bros., and it arrived with the kind of backstory that could easily make a record feel like a press release — Le’aupepe’s personal breakdown, the explicit theology running through the tracklist, the band’s reputation as the kind of Australian indie act that wore their hearts too visibly for certain critics. It would have been easy to dismiss, and some did. But “The Heart Is a Muscle” is not a record that fits inside a critical position. It doesn’t come at you as a document of suffering or as a testimony of faith recovered. It comes at you as five and a half minutes of someone actively trying to believe something and refusing to pretend the trying is easy.
The arrangement does the heavy lifting that words can’t. The song builds slowly — almost slowly enough to lose patience with — through a first half that feels like a man rehearsing his own conviction, saying the words in the right order until the right order means something. And then the back half opens up, and the drums kick in harder than anything you expected at the start, and Le’aupepe is no longer rehearsing. He’s insisting. There’s a difference between singing a song about perseverance and a song that performs perseverance in real time, and this one is the latter. The dynamics are the argument.
What Gang of Youths understood, and what makes this song different from a hundred other indie anthems about resilience, is that the experience of rebuilding is not triumphant while it’s happening. It’s methodical. It’s grinding. It’s the same motion repeated until the motion becomes automatic, and only after that does anything like faith return.
The heart is a muscle. You train it by using it.
Le’aupepe has said in interviews that the song is partly about a romantic relationship and partly about something larger — the practice of caring for other people as a spiritual discipline, a form of exercise, a thing you do even when the results aren’t visible yet. That framing matters because it means the song isn’t only addressed to a person. It’s addressed to the habit of loving. To the decision to remain open when closing would be structurally easier, physiologically safer.
Which is a strange thing to shout over a drum fill at full volume. And also the most honest possible way to say it.
Five years after the record, Le’aupepe spoke about the period when he wrote these songs with the clarity that only comes in retrospect — describing himself as someone who had stopped trusting his own instincts and had to learn, methodically, to trust them again. Not through revelation. Through repetition. Through the boring, necessary work of continuing.
The song closes without resolving the question it opens with. The heart may be a muscle. The work may be worth it. But the song doesn’t tell you that it is. It demonstrates the work — five minutes and twenty-five seconds of it — and leaves the conclusion where it belongs: with whoever is listening, in whatever room they’re in, with whatever they’ve been trying to hold together.
What the song asks for isn’t belief, which it never claims to have earned in the first place. Just the next repetition, and the one after that, the same motion carried on without any promise about where it gets you.
