Biomarkers
Explore our latest articles on biomarkers to feed the curious you.
6 HRV rules for smarter training
Learn how to use HRV data to guide your training, improve recovery, and optimise workout timing based on insights from Ultrahuman Ring AIR users.
Jun 11, 2025
5 heart rate variability (HRV) mistakes to avoid
We list common misconceptions about heart rate variability, and how to interpret the numbers
May 19, 2025
Skin temperature: What's normal and how it fluctuates
We explore skin temperature, what's normal, and how it naturally fluctuates during sleep, the menstrual cycle and with training or illness
Apr 30, 2025
Introducing Nap Detection V2: Find your unique rest signature
Nap detection is crucial for understanding your body’s recovery patterns – whether you’re catching up on sleep debt, recharging after an …
Apr 11, 2025