I use the ECG app and the blood oxygen app just to see where I'm at before I begin, then I monitor it on my regular bench breaks to see if anything has changed too drastically.

Here's how you can use the watch to monitor blood oxygen levels for health or fitness. Skip to main content. Menu ... How to measure blood oxygen using an Apple Watch Series 6.

In fact, using your smartphone’s camera and flash may help to decipher your blood oxygen levels. Your phone may be able to do far more when it comes to your health, researchers have uncovered.

In order to use the Apple Watch Blood Oxygen app, you must have the Apple Watch Series 6 or Series 7. Neither the Apple Watch SE nor Apple Watch Series 3 support SpO2 readings. 1.

Open up the app screen on your Apple Watch and look for the Blood Oxygen app. Press ‘Start’. A reading will take 15 seconds to complete. You’ll then be given your results.

Takuo Aoyagi discovered a better way to measure oxygen levels in the blood. Clip-on monitors inspired by his work have saved millions of lives. Japanese engineer’s work led to devices clipped on ...