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product
Morpheus
2 use
Last discussed Nov 11, 2026
A heart rate variability (HRV) monitoring device that uses a chest strap or armband with an optical sensor positioned at the antecubital fossa for accurate HRV measurement.
What else do they all swear by?
Tim Ferriss and Peter Attia use or recommend Morpheus. See what else they have in common.
See what they all swear by Or pick your own peopleRecently discussed in
Q&A with Tim — How to Get Unstuck, Resilience in Hard Times, Tools for Brain Health, and More
Tim Ferriss · Nov 11, 2026
Building strength and muscle mass: optimize training & nutrition for longevity (AMA #71 rebroadcast)
Peter Attia · Jul 6, 2026
What creators say
Tim Ferriss
uses
Used for: Tracking heart rate during Norwegian 4x4 interval training
"Getting to a very high heart rate. I use a heart rate monitor, Morpheus, for tracking all of this."
More from Tim Ferriss →
Peter Attia
uses
Used for: Accurately measuring HRV to assess recovery and guide training intensity decisions
Praised: Optical sensor positioned at the antecubital fossa provides much more accurat...
vs: Compared to wrist and hand-based wearables, which he says are not nearly as a...
"I've talked a lot about how I like using a device called Morpheus. Again, no affiliation with Morpheus, but I like it because you use either a chest strap or an armband where the optical sensor is in the antecubital fossa. So you're actually getti..."
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