Experimenters!!! Does Wim Hof breathing method work to improve HRV

Frontiers Acute Effects of the Wim Hof Breathing Method on Repeated Sprint Ability: A Pilot Study

Cold Water Therapy Part 3: The Godfather of Cold, Wim Hof

The Wim Hof method – The Science of Parkinson's

The effectiveness of the Wim Hof method on cardiac autonomic function, blood pressure, arterial compliance, and different psychological parameters

Cold Water Therapy Part 3: The Godfather of Cold, Wim Hof

How I Used Resonance Breathing and HRV Training To Combat Anxiety, by Max Frenzel, PhD

Frontiers Acute Effects of the Wim Hof Breathing Method on Repeated Sprint Ability: A Pilot Study

Heart rate variability (HRV) before, during, and after both breathing

I discovered the holy grail of HRV. It's called coherent breathing, or resonance breathing. 5 seconds in, 5 seconds out, 2 times a day for 20 minutes. HRV skyrockets short- and long-term

14 Hacks I've Used to Increase My Heart Rate Variability by 50%

The Wim Hof method – The Science of Parkinson's

Best breathing techniques to increase HRV and lower blood pressure (Self- experiment) - Addicted to optimization