Proof We’re Built to Keep Going

Jan 20

January 21, 2025

Your heart never tires. While your mind and body may feel exhausted, your heart has an untapped reservoir of strength that keeps you going. When you think you’ve hit your limit, you’re not actually out of energy—you’ve just lost connection to the part of you that never quits.

Don’t stop, reconnect with what keeps you going

I learned what I think might be one of the greatest facts about human beings the other day. It gives real biological insight into what resilience actually looks like. I even did a little research to confirm.

Ok, here it is…

There is only one muscle in the human body that doesn’t tire. If you’re a runner, you already know it’s not the quads. If you’ve worked with your hands before, you know it’s not any of your finger muscles. If you’ve physically exerted yourself in any way, I’m willing to bet that you’ve been sore.

The one muscle that doesn’t tire out (in a physically healthy person) is the heart. The heart beats about 100,000 times a day, pushing a total of about 2,000 gallons of blood throughout your body. All of our skeletal muscles fatigue after exertion. But the heart is made of something different: cardiac muscle. A specialized tissue uniquely designed to sustain continuous contraction without tiring. It can only do this, for you science-minded people out there, due to an abundance of mitochondria—the energy-producing powerhouse of cells—that keep the heart fueled and functioning around the clock.

Biologically the heart is brilliant. And it also offers us insight into our own resilience. The heart doesn’t stop when faced with resistance. It doesn’t give up when pressure rises. It doesn’t stop, period, at least until our very end.

Listen, we all hit moments of exhaustion, burnout, and the feeling that we just can’t take another step—whether in a workout, a relationship, a role, or in business. When we reach that point, it’s easy to believe that we’re completely spent, that there’s nothing left to give.

But here’s the thing, biologically, the center of your courage, passion, will to keep going – your heart – never tires. Sure, we feel fatigue. We feel doubt. We feel like we’ve hit a wall. But that’s not because we don’t have the capacity to keep going. It’s because we’ve momentarily lost connection to the part of us that never tires—our heart.

When you feel like you’re at your limit, you don’t need to push harder or grind yourself into the ground. You need to reconnect with the place inside you that has always had the strength to endure. The heart is proof that this strength exists—it never runs out, never gives up, never stops. If your heart can keep going, so can you.

Key Idea

If your heart can (literally) keep going, so can you. Your heart never tires. While your mind and body may feel exhausted, your heart has an untapped reservoir of strength that keeps you going. When you think you’ve hit your limit, you’re not actually out of energy—you’ve just lost connection to the part of you that never quits.

Takeaway

Don’t stop, reconnect with what keeps you going,

Build your Movement

What practices do you have to stay connected with your heart, your purpose, your will to keep moving forward?