Is extreme exercise bad for your heart?

The eternal debate is back, if it ever went away. Is too much running bad for your heart? I’ve faced a number of people who have tried telling me it is so. Chances are you also have.

But is it true? The “evidence” given to support this idea is usually anecdotal or flat out false. How many times have you been told about Jim Fixx? While his death was tragic, when you look at the big picture with him specifically or with runners overall, things look much different.

Well, now we have more evidence that even extreme exercise doesn’t appear to be a health risk. It appears going beyond a certain extent of exercise doesn’t help your health but it also doesn’t harm your health. So, if you enjoy doing more, don’t worry about it.

Read on for more of what I’ve been reading about recently…

Ketones have been getting a lot of attention lately. Is it hype or real? Well, this study suggests that, at least for the 10K, it might be hype. Note: One study is suggestive but not conclusive and not helping for the 10K doesn’t mean it won’t help for other distances. But it is an interesting data point and hopefully more studies, including ones at other distances, will be coming.

Ketones aren’t the only heavily hyped fueling method being brought up. What about the high tech sports drink Eliud Kipchoge was using in his sub-2 hour run? Well, it turns out there has been a study done on this. Again, initial research doesn’t paint a very positive picture. This isn’t the end of the story. One study isn’t conclusive. However, maybe it’s a reason to be a little more hesitant when hearing amazing claims being made.

This fall, the debate surrounding Nike’s high tech shoes heated up in a big way. I tend to have some complicated views on them that makes it hard to write about them. In short, I can see the validity in a lot of different, sometimes conflicting, viewpoints. Here’s an interesting discussion on the shoes. Here’s another interesting discussion. I kind of like the solution given there. Limit the height of the midsoles of race day shoes, then let shoe companies do whatever they want within that height.

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