Mar 30, 2026NutritionGABA and PEA for HRV: Interesting Signals, Thin EvidenceCan GABA or palmitoylethanolamide raise heart rate variability? Two small trials hint at an effect, but exercise and uncertainty complicate the story.gabapeaheart rate variabilityparasympathetic dominanceRead article →
Mar 22, 2026SleepOura Mindfulness RCT: Better Sleep Scores, Weak ProofA 10-day Oura mindfulness RCT improved ring-measured sleep and HRV, but a waitlist control and wearable limits fall short of proving a physiological benefit.mindfulnesssleep efficiencyheart rate variabilityoura ringRead article →