Everyone knows the feeling; you have seen every hour of the clock during the night, woke up several times and when the alarm clock goes off, you do not feel rested at all. To make matters worse, you have a very important meeting that morning where you have to give your best on a cognitive level. Unfortunately, after such a night, this is no longer possible.
This is just one of many examples to show that a good night’s sleep does have an impact on your cognitive and physical performance.
So how does GRAM manage to push you to peak performance via your sleep?

Well, are you already familiar with the Oura ring?
This ring is a wearable device that monitors your sleep and activity and provides you with the necessary insights to optimise your sleep, recovery and readiness.

How does the ring work?
Thanks to a combination of different sensors in the ring, your sleep pattern will be mapped. For instance, the accelerometer and gyroscope will register movements during your sleep and the thermometer will measure your body temperature, all to determine the different sleep stages.
But the most special thing about the ring is the fact that it also takes into account your heart rate variability (HRV). HRV is a measure which reflects the variation in time between different heartbeats and which provides more information about our body’s stress level and recovery.
For example, a lower HRV during sleep will indicate that your body is in a stress state and therefore cannot recuperate optimally. In turn, a higher HRV indicates a deeper and more restful sleep.
All this data will be analysed via an advanced algorithm resulting in a detailed analysis of your sleep pattern; how long you were in each sleep phase, how often you woke up, and your sleep efficiency.

There are so many sleep-tracking devices, why the Oura ring?
The Oura ring is worn on the finger, allowing data such as heart rate and body temperature to be recorded much more accurately. Consequently, your sleep pattern with the corresponding sleep phases will therefore also be able to be more accurately portrayed and Toon can therefore tailor its recommendations very specifically to this.
Besides greater accuracy, Oura has another edge over other devices. For instance, the Oura ring also provides a Personal Baseline, a combination of metrics that give you a snapshot of your body’s unique abilities and limitations.
Also, the Oura-ring can identify early signs of illness (e.g. cold, flu) by linking your body temperature to your respiratory rate.

What does GRAM do with it?
Thanks to the data the ring records, Toon, GRAM’s sleep expert and neuroscientist, can monitor your sleep pattern from day to day and give recommendations to optimise it. Since he is also aware of your personal and work-related circumstances, he can therefore tailor his recommendations accordingly. For instance, if you have some important meetings in the coming week, or if you are travelling to another time zone, Toon will make sure you are optimally recovered for those important meetings or that you suffer as little as possible from jet lag.

Olympifying your capacity is only possible when we treat your sleep as an essential pillar of your performance.
The Oura ring allows us to do that effectively, in the most accurate way.



  • R. Cao, I. Azimi, F. Sarhaddi, H. Niela-Vilen, A. Axelin, P. Liljeberg, A.M. Rahmani. Accuracy Assessment of Oura Ring Nocturnal Heart Rate and Heart Rate Variability in Comparison with Electrocardiography in Time and Frequency Domains: Comprehensive Analysis. January 2022. Journal of Medical Internet Research.
  • M. de Zambotti, L. Rosas, I.M. Colrain, F.C. Baker. The Sleep of the Ring: Comparison of the OURA Sleep Tracker against Polysomnography. March 2019. Behavioral Sleep Medicine.
  • How Accurate Are Oura’s Heart Rate & HRV Measurements? –