You probably won’t think this study is as interesting as I do, but it’s really interesting — I think, anyway.
What’s the difference between well-trained athletes and recreational athletes? For one, well-trained folks have done a lot more cumulative exercise than us schmoes. They have more muscle as a percentage of their body composition. And they typically have less fat.
Here’s another difference: they burn more fat than we do — even at higher intensities. See, usually, the more intensely you workout, the less fat you burn. But as it turns out, even when they’re exercising at high intensities, well-trained athletes burn three times as much fat as recreationally trained athletes.
Furthermore, the rate of fat burn seems to correlate with VO2max. What is VO2max? It’s a measurement of how much oxygen you have per liter of blood, and it’s a performance predictor for endurance sport success. How do you increase your VO2max? With a lot of endurance training and with occasional high-intensity intervals. In fact, according to one article from Alex Hutchinson’s Runner’s World blog, the best intervals for improving VO2max are around 3–5 minutes.
Improving your VO2max will make you a better athlete. And as it turns out, it will also make you a skinnier person. So if you want to get skinnier, focus on getting faster. And if you’re focused on getting faster, expect to get skinnier.
(Image borrowed from Asker Jeukendrup’s blog. Asker, if you want me to remove it, please just ask instead of filing a lawsuit or sending a cease-and-desist letter. Thanks.)