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According to this article: heart-rate recovery is defined as the decrease in person's heart rate, measured 1 minute after peak exercise with "peak exercise" described as being as strenuous as possible, possibly even larger than the theoretical maximum heart rate (220 - age). The article also defines a certain cut-off point: recovery rate of less than ...


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As Julii alludes to, "zones" are pretty much arbitrary, as you are burning fat as a fuel in all zones, just the percentage to which it contributes to the whole is different for different effort levels. As you get higher in intensity, the more you rely on stored carbohydrates (glucose), and the lower in intensity, the more you rely on fat. They are ...


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There is a rule of thumb that anything below 80%HRMax is working within the aerobic zone, whereas above you are heading towards threshold and anaerobic zones (being able to sustain these harder efforts for less and less time). Personally, when training aerobically, I aim for roughly 75% and not higher, even when it comes to hills. There is thought within the ...


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I suppose those are really good questions, because most the formulae just work on rules of thumb & probably we're all too individual for the formulae to work perfectly for everyone reliably. But the question makes me wonder if the whole idea of zones is just a bit hokey, since the transition points are probably not fixed even for individuals; probably ...


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There's a study floating around that shows muscle increases simply from taking anabolic steroids, with no additional workload. So one would imagine that if you did something to yourself that increased your testosterone and human growth hormone, and had enough protein, you'd get (minute but) similar results. I don't know if there's any research specifically ...


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It depends, firstly, on how you're measuring your heart rate - optical wrist sensor vs chest strap? Wrist sensors are notorious for inaccurates readings, despite current advances in technology, due to interference from light, sweat etc. Secondly, if you do hit 170, and can maintain it without feeling like you're gunning, it's not your maximum heart rate. ...


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