This thread got me into the App Store and I found an app called Heart Analyzer that should help you do what you want to do. It basically accesses all the heart rate data from the Apple Watch and presents it on your phone in a more user friendly way. You can configure when it captures wake and sleep, and another user said that is how they capture their resting heart rate each day is to set the time to when they will be asleep and wearing the watch. for me, I'm not planning on wearing it sleeping, but I am usually at rest around the time it would get the sleep reading.