On average, a healthy heart beats 115,000 times per day. 

When excited, the heart rate can double. 

The heart pumps 2,000 gallons of blood through your entire body 24 hours a day. 

It never rests.

 The heart is the hardest-working muscle in your body. 

But when it’s damaged, it’s just like skin. It scars, and scar tissue can be very dangerous in a heart. It weakens it. And eventually, a heart full of scars stops working.

 Scarred hearts don’t heal, but over time, the scars can change. 

They can become smoother, softer. 

And some scars can even fade away.