Maybe it's just me but the scale of the Heart Rate data found in the health stats really annoys me, I've been hoping for a while that they would improve this. The Active and Resting heart rate trend is shown on the same graph, which means the scale needed to accommodate both sets of data makes it impossible to identify meaningful trends for Resting Heart Rate.
It would be good to choice which data point you want to view individually. For me RHR is much more of an important metric to track and monitor.