The best part? Oura houses your data in an incredibly user-friendly app with thoughtful insights and actionable recommendations. Since I started tracking my sleep with Oura one year ago, I’ve improved my HRV (a key indicator of health and longevity!), increased my REM sleep by over 400%, logged more steps than any other year, and completely regulated a previously abnormal menstrual cycle. Oh, and I ran one of my fastest marathons yet.