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Self-experiment with L-theanine: effect on sleep and cognition

metasophi.com

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Re: Self-experiment with L-theanine: effect on sleep and cognition

#4
post #2

fitbits and similar are fine for measuring awake vs asleep but really terrible at breaking up the stages

I've been curious about this. They all are reporting it, nowadays. I'm assuming they have reason to think they are getting better at it?

Re: Self-experiment with L-theanine: effect on sleep and cognition

#5
post #4
post #2

fitbits and similar are fine for measuring awake vs asleep but really terrible at breaking up the stages

I've been curious about this. They all are reporting it, nowadays. I'm assuming they have reason to think they are getting better at it?

I have reason to believe product management wants not to be left behind by the competitors, independent of the quality of their implementation.

Re: Self-experiment with L-theanine: effect on sleep and cognition

#6
post #4
post #2

fitbits and similar are fine for measuring awake vs asleep but really terrible at breaking up the stages

I've been curious about this. They all are reporting it, nowadays. I'm assuming they have reason to think they are getting better at it?

metrics sell, even when they're not that accurate, and even when people know that.

Re: Self-experiment with L-theanine: effect on sleep and cognition

#7
post #3

It is great the author highlights that green tea already includes L-theanine where it is common to read about buying supplements.

Indeed, but you would really need to drink a lot of green tea to get the same amount of L-theanine you would in a supplement: "2.5 litres of brewed green tea would be needed to get 200mg of L-theanine". Also a question of how much dose you want of course...

Re: Self-experiment with L-theanine: effect on sleep and cognition

#8
post #2

fitbits and similar are fine for measuring awake vs asleep but really terrible at breaking up the stages

They're not as accurate as polysomnography but there is some correlation which should allow these measurements to serve as a useful proxy over 100-180 days. See this review for example:

"The findings of this systematic literature review indicate that the devices with higher relative agreement and sensitivities to multistate sleep (ie, Fitbit Charge 4 and WHOOP) seem appropriate for deriving suitable estimates of sleep parameters. However, analyses regarding the multistate categorization of sleep indicate that all devices can benefit from further improvement in the assessment of specific sleep stages."

Source: https://mhealth.jmir.org/2024/1/e52192/PDF

Re: Self-experiment with L-theanine: effect on sleep and cognition

#9
post #7
post #3

It is great the author highlights that green tea already includes L-theanine where it is common to read about buying supplements.

Indeed, but you would really need to drink a lot of green tea to get the same amount of L-theanine you would in a supplement: "2.5 litres of brewed green tea would be needed to get 200mg of L-theanine". Also a question of how much dose you want of course...

And matcha tea?
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