Emfit_Jesse Kaislavuo


EMFIT QS is the only contact-free health monitor on market that can provide recovery and readiness analysis based on whole night heart-rate-variability. This is why professional athletes, triathlonists, cyclists, football players and other sports enthusiasts have chosen to use EMFIT QS.  

Sky Cristopherson

"Working with Olympic athletes, we use ‘Data not Drugs’ to boost every aspect of athlete health and performance. Since sleep is foundational to health and performance, it is a focal point of our program and we have used every sensor on the market. 

Emfit is creating new capabilities in understanding sleep both with the goal of improving it, but also using it to better inform training decisions as we moved towards truly individualized training. 

The ease of use and accuracy of Emfit is also unprecedented. As a result, Emfit is now an integral part of our ‘Data not Drugs’ program as we build a future that uses more data and less drugs, in sport, and hopefully in health.”  


Sky Christopherson
World Record Holder and Founder, 

Paul Ambrose


Three-time Ironman® Champion, Paul Ambrose, relies on Emfit QS recovery, stress and sleep quality monitor to track changes in his HRV after each training day. Being able to analyze this important data helps him prepare for each race.


Paul Ambrose
Professional Triathlete

3 x Ironman® champion


“I recently purchased the Emfit QS and I love it. It's changing how i look at my training and overtrainining. It's amazing to see how stressed my body is when I go out on a saturday night and see how high my HR gets -- makes me rethink about drinking!”



Teemu Lemmettylä


“Emfit QS allows me to optimize my training potential by providing a baseline HRV, enabling me to control and manage the ideal balance between training and rest.”


Teemu Lemmettylä
Professional Triathlete

Jesse Kaislavuo


"I have been using Emfit QS for about a month now and I have only positive feedback. I have stopped my morning HRV measurements with Polar, because Emfit QS is so incredibly accurate and all-night data is something other devices can't offer this well.

I want to praise your whole team especially for the web app user interface. It is uncluttered and studying and comparing the data is easy. The latest update corrected a minor problem, which was caused by me and my wive's different sleeping patterns. Now editing data can be done easily even at breakfast table and thus my data remains correct."

Jesse Kaislavuo
Elite cyclist
1st in Fellman Criterium race (2016)
1st in Rosendahl GP (2015)
1st in S.K. Memorial (2016)

Bob Kryczko

"I've used an Emfit QS for three years now. I like how easy it is to use. Just go to bed - there's no fiddling with a smartphone to start recording. And the dashboard graphics are easy to read. I like having this objective insight into the state of my physiology. It helps improve my training and recovery decisions. It's also improved my sleep habits. I wish this had been available when I was a collegiate athlete!"

Bob Kryczko

Santa Barbara, CA

Emfi, Emfit, EMFIT QS, QS Quantified, QS+CLINICAL, QS+CARE, QS+ACTIVE, QS+RESEARCH, QS SERVICE, Sensing What Matters, QS Quantified logo, and Emfit logo are registered trademarks or trademarks of Emfit Ltd in EU, USA, China and other countries.  © Emfit Ltd 2004-2020. All rights reserved. Patents granted and pending for. All specifications are subject to change without prior notice.