A new study shows that smart stress sensors do not have an idea of what they do

You may want to think twice before you put a lot of shares in the latest stress plans Physical fitness can be worn. A A recent study from the University of Leiden HollandPublished in the Journal of Pathological Psychology and Clinical Science, I found it when Smart watches Similar devices record readings, fatigue, or sleep, and often make them wrong.

The researchers studied 800 young men who use the same thing Garmin Vivosmart 4 Smart watches model. They compared the data produced by smart watches with the reports created by users four times a day about how they feel sleepy or confirmation. The main author and assistant professor Eco Farid said that the relationship between wearable data and the data created by the user was “essentially zero.”

Garmin actor did not immediately respond to the comment.

Tired or sex? Your watch does not know

So why do they wear wearable devices? Physical fitness watches Very wrong? Their sensors are somewhat limited as they can do. Watch like these should be worn properly at all times (a loose or narrow watch may give bad readings, for example), and basic information as the pulse and movement rate is usually used to provide guesses about health.

These guesses do not always reflect the scenarios of the real world. The high stress that can be worn when the real cause of change may determine an exercise or excitement of good news or sex. There are many possible alternatives to stress or fatigue that the hours in the study did not obtain properly – and sometimes the emotional states are exactly the opposite state of what users recorded.

The Dutch study noted that the Garmin body battery readings, which especially measure material fatigue, were more reliable than stress indicators, but are still inaccurate. The performance of the sleep sensor is their best, as Garmin watches show two -thirds of the indication of the differences between a good and bad night sleep.

It should also be noted that smart watch sensors can become more accurate with technology improvement. It will be interesting to conduct a similar study with the latest Garmin Vivosmart 5 To see if anything has improved, as well as knowing if other models such as The latest versions of Apple Watch It has similar results.