Can Too Much Cardio Be Bad For Your Heart? Maybe
Some researchers have found evidence that too much cardio might actually be a bad thing — but not all researchers agree.By Leah Becerra | July 12, 2016
Pretty much every doctor and health researcher agrees: Running and other forms of cardio exercise are great for your overall health. But can too much cardio be a bad thing?
It's a fairly new phenomenon, but extremely healthy runners, cyclists and other types of endurance athletes across the world have died from heart complications while competing. And those complications may be from all that exercise.
But let's be clear who we're talking about here. Runner's World estimates the average runner training for a marathon will probably only log 30 miles to 50 miles a week. Elite runners training for the same race could cover 100 miles to 140 miles in the same time.