Fitbit/Google has enabled the blood oxygen saturation reading of the Pixel Watch, but it only works at night! I don’t understand why Fitbit has not included an app to let users get a reading on-demand, like like we can do with ECG. I thought SpO2 is valuable info while working out, so I don’t understand why the reading is only at night. Consequently, I don’t benefit because I am not wearing my watch while I sleep.