Which is better for sleep tracking accuracy, a ring or a watch?
I've been diving deep into sleep tracking recently, especially since I'm also focused on optimizing my recovery for weightlifting. With all the options out there, I'm trying to decide between a sleep tracking ring (like the Oura) and a smartwatch (like the Apple Watch or Whoop). Both claim to provide insights into sleep stages, heart rate variability, and overall sleep quality, but I can't find any solid comparisons on their accuracy.
From a biomechanics perspective, I know that the fit and positioning of the device can significantly impact the data quality. For instance, rings typically sit on a finger where blood flow might be more consistent, potentially leading to better heart rate readings. On the other hand, watches often have more sensors that can capture additional metrics like skin temperature and SpO2 levels. Still, they can also be bulkier, which might affect sleep comfort.
I also read that some wearables are better at distinguishing between REM and deep sleep, which is crucial for recovery. With my training regimen, I'm curious if one type of device might provide better feedback on how well I'm recovering post-lifting sessions. Has anyone made the switch from a watch to a ring or vice versa? What have your experiences been in terms of accuracy and usefulness for tracking sleep?
I'm particularly interested in how well these devices track different sleep stages and overall sleep quality. Any insights would be appreciated!