What Are Restful Periods?
Restful periods include naps, meditation, and breathing exercises, among other activities. Whenever Oura senses that you're resting, it logs a restful period. Restful periods can even include laying on the sofa and watching TV or reading a book. Oura uses several measurements including your movement and temperature to detect restful periods.
Rest is currently not taken into account in calculating Readiness. Rest is shown in the Oura app on the home tab. Rest reports include your lowest resting heart rate, along with your average HRV.