Thought this was an interesting read.
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That study is getting a lot of coverage. The results are impressive, indeed, though it’s notable that it was funded by wearable company Polar, which has a vested interest in coming up with algorithms for training.
At Outside, Alex Hutchison points out that a better comparison might be the algorithm against a predetermined training plan bolstered with common sense. If your plan calls for a hard workout and you’re just not feeling great, it makes sense to shut it down early rather than push through just to check the box.
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