I have read a few articles that suggest that a woman's resting heart rate increases by on average 2.1bbm during ovulation and fertile week, and could be a helpful indication for monitoring one's fertile window.

Since health trackers and heart rate monitoring wearable are becoming popular, would Glow consider adding resting heart tracking to the app? Would be very interesting to overlay this with basal temperature.

I have looked at my resting heart rate and compared it to my calendar in Glow and I can see a trend with my data.