Oura
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“I think the aura ring probably does the best job. I really don't think they've gotten there quite yet because depth of sleep is based on brain waves.”— Dr. Michael Breus
“And I'm wearing an Oura ring when I sleep to see how all of this affects my sleep architecture and everything else.”— Tim Ferriss
“I do have an order ring I could wear one prior I mean I could put one on tonight or tomorrow we use Aura for the record with almost everybody for many reasons”— Andy Galpin
“Yeah, I use both Eight Sleep and Oura at the moment.”— Tim Ferriss
“many different tracking devices my favorite being the aura ring... it would pay for itself a thousand times over in my life”— Tim Ferriss
“i do use the ora ring that's going to be the primary for looking at sleep quality and hrv so those would be the two tools predominantly”— Tim Ferriss
“i track my sleep quality with something like the aura ring i do wear the aura ring o-u-r-a which i find to be extremely helpful”— Tim Ferriss