2min chapter

Ben Greenfield Life cover image

How Rich Guys Stay Fit, Heart Rate Recovery, Resting Heart Rate Tracking, Heart Rate Variability, Cold Soak Temperatures, Little-Known Pre-Sleep Supplements & Much More With Keith Rabois.

Ben Greenfield Life

CHAPTER

How Do You Track Your Sleep?

I do not use the Apple Watch for tracking sleep. It's really critical that you can engage in accurate sleep, sleep stage discrimination. Any risk-worn device is not going to be very accurate for discriminating REM sleep for sleep sleep. The thing that's given me a little bit of pause is this idea of nervous system recovery during sleep and the idea of being unplugged from an appreciable amount of non-native EMF while you're asleep. Do you consider any of that stuff when it comes to your sleep space? I haven't.

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