Hi,
My instinct measures my heart rate all the time, but all day heart rate in the app only measures every 2 minutes. This is a problem for me, because it didn't recognize my lowest heart rate during the day. Resting heart rate is an average of the lowest heart rate you have. I couldn't find that 42 bpm anywhere on the graph, does that mean that it didn't use 42 bpm as well to calculate my resting heart rate of 57 bpm, or didn't it just put it on the graph?