Is Running a Marathon Bad for Your Heart?
Heart health benefits of marathons - Dr. Sara Filmalter
What To Know About Running And YOUR HEART
Running to extremes: High-endurance exercise OK for heart health
Marathon Director has heart health warning
Are There Long-Term Health Benefits To Running A Marathon?
Marathon Runners Life Expectancy
What Does Running A Marathon Do To Your Body?
How I Have Enjoyed My 30 Year Teaching Career Helping Students
Marathon Running: Too Much of a Good Thing?
Half Marathon Mistakes: 5 Biggest Reasons Beginner Runners Fail
How running a marathon can affect heart function and how the heart adapts to training
RUNNING FASTER - Secret to Running with a Low Heart Rate
RUNNING A Marathon Is Bad For Your HEALTH - Dr. B M Hegde
Why Should You Run With A Low Heart Rate?
マラソン中に体に何が起こるのか? |明らかにされました
Marathon Risk for Non-Runners
Running a marathon makes you 'younger': BBC News Review
How Long Does It Take To Recover From A Marathon (And How Can You Tell?)
The Secret to Running with a LOW HEART RATE (Not What You Think!)