A Marathon Runner's Heart

[Kraker]

A marathon runner's heart can beat up to 200 times per minute during a race!

 

[Lyssandra09]

That’s wild! The sheer endurance and heart power needed for marathon running are impressive. It’s amazing to think how hard those athletes’ hearts work to keep them going for miles and miles. Makes you appreciate the dedication and training behind every marathon finish line!

 

[SpinelSun]

No kidding, that's like a workout just hearing about it!

 

[rapmoon]

I think a marathon runner's heart adapts significantly to the demands of long-distance running, becoming more efficient over time. Though, it's fascinating how the heart's structure changes with intense training.