You might find these 2 infographics interesting. I can’t in any way vouch for the voracity of either. I’ve always found that training helps too. But it’s quite nice to get all the info in one place in a pretty picture.
![peak-performance-achieve-your-athletic-goals_5318e363a6695_w1500[1]](https://the5krunner.com/wp-content/uploads/2015/06/peak-performance-achieve-your-athletic-goals_5318e363a6695_w15001.jpg)
![PzYiL[1]](https://the5krunner.com/wp-content/uploads/2015/06/pzyil1.png)
Last Updated on 13 January 2026 by the5krunner
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tfk is the founder and author of the5krunner, an independent endurance sports technology publication. With 20 years of hands-on testing of GPS watches and wearables, and competing in triathlons at an international age-group level, tfk provides in-depth expert analysis of fitness technology for serious athletes and endurance sport competitors.
