Installed the beta and recorded respiration rate overnight last night.
I thought it'd be interesting to compare the results with those from my Emfit sleep tracker, which uses an under-mattress pad to track sleep stats, including HR and respiration.
The FR945 is mostly in agreement with the Emfit, although it does report a couple of 2x rate spikes which the Emfit does not, those look suspicious to me given that I was supposedly in a deep sleep stage at that time according to both trackers.
Both reported an average respiration rate of 12 BPM for last night.
It's also good that the two devices generally agree on the sleep stages and sleep start/end times. The actual reported sleep stages differ, but the trend is the same - the periods where both thought I was in a lighter/deeper sleep match, although the thresholds for reporting the exact stage appear to differ.
The Emfit started recording when I got into bed at 11:04, but it reported me as "awake" until 11:26 which is pretty close to the 11:19 from the FR945
