One of the most important metrics on a Fitbit tracker is the Estimated Oxygen Variation – and now that every tracker is fitted with an SpO2 sensor, everyone can take advantage. Blood oxygen can ...

In consideration of these factors, we propose the Guidelines for Reporting Articles on Psychiatry and Heart rate variability—GRAPH.

Fitbit users were surprised with an added feature on their wearable this week — the ability to check the variability of oxygen levels in their bloodstream. Users with any of Fitbit’s Sp02-enabled ...