The song "Your Heart Is A Muscle" by Carly Rae Jepsen is about the power and resilience of love. The lyrics depict a situation where the narrator feels distant from someone they care deeply about. They express confusion about the other person's actions, like giving back their shirt, and feeling like they are giving up on their relationship before it goes wrong. The chorus emphasizes the idea that love is not fragile like glass but rather a muscle that needs to be worked on and strengthened. The narrator wants the other person to keep trying and not give up on their love. They believe that the heart can be made stronger by putting effort into it. The song suggests that during difficult times, it is important to remember that love requires effort and perseverance. The narrator wishes they could turn back time and be with the person they love, hoping to make things right. They want to show their love and make the other person feel special, as symbolized by writing their name in the sky to light up their eyes. In summary, "Your Heart Is A Muscle" is a song about the power of love and the need for both individuals in a relationship to put in work and effort to make it stronger. It encourages perseverance and reminds us that love can withstand challenges if we are willing to keep trying.