Nyxo coaching lessons and blog posts in the category optimization.
How to Optimize Physical Performance by SleepingPietari Nurmi
Heart Rate Variability (HRV) – Is the Hype Justified?Pietari Nurmi
Most sleep and activity trackers measure heart rate. Many also report something called “heart rate variability” or HRV. What on earth is…
How to Optimize Physical Performance by Sleeping
There is a two-way connection between sleep and exercise. Physical activity improves sleep...