alt Hacker NewsNo, that would wake you up long before it had cardiovascular benefit. You need your heart rate up into zone 2 to 5 to really have a positive impact. That's 120 BPM plus for most people. Once you're around 80 it'll wake up anyone, even someone with very low cardiovascular fitness.
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strbean • today at 1:16 AM
> Once you're around 80 it'll wake up anyone
Source? I haven't been able to find info on this. I get resuls on nocturnal tachycardia and such. Nothing on elevating a sleeping person's heart rate and observing the result, though.
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I read with the right dream (nightmare) heart rate can climb to 180.
If you slowly condition yourself I think you can exchange sleep quality for increased heart rate.
But I suspect the heart needs rest too and you will die.
An isometric hold would be better I think. You don't get any vo2max improvement but it does improve cardiovascular health.