How to use heart rate variability as a training tool

Understanding HRV can help you keep your finger on the pulse of your running health

Runners’ hearts work harder than swimmers’ hearts: study

We always knew athletes had big hearts. A new study shows slight differences between runners’ hearts and swimmers’ hearts

Hypertrophic cardiomyopathy: The runner’s silent killer

Why do some young people have heart problems despite being fit and active? Why one genetic typo can lead to death in seemingly healthy young runners.