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HRV (heart rate variability) is the variation in the time interval from one heartbeat to the next. It can be used as an indicator of physiological stress. ...

Ava measures your pulse rate via optical feedback. The sensor technology is called photopletysmography.

Currently sleep is based on movement detection. During deep sleep the body is at rest and moves very little, while during REM and normal sleep your body typi...

Your wrist temperature is lower than your oral temperature but just like your oral temperature, it changes based on your changing hormone levels. Though it m...

Ava measures the temperature at your wrist so it will display a different temperature reading than you would get from an oral thermometer - even so, it is s...

Breathing rate measures the number of breaths you take per minute, also known as the rate of respiration per minute.

Several publications have published results indicating that breathing rate is higher in mid-luteal phase compared to the mid-follicular phase. An increase...

Yes! Breathing rate is one of the parameters we're using to fine-tune the fertility predictions.

Breathing rate can vary widely during the course of a normal day because exercise, emotions/excitement, and other factors can all influence breathing rate. ...

Existing scientific publications suggests that breathing rate tends to remains stable and doesn't change significantly during pregnancy as compared to ...