Is the health data from your smartwatch reliable?

Your smartwatch measures heart rate, sleep, stress levels and much more. But how reliable is that data actually? According to Men's Health, that is not always the case.
The technology behind smartwatches is developing rapidly, but researchers warn that the measurements are not always accurate. Factors such as skin color, movement and the placement of the watch can influence the results.
Still, the data from your smartwatch can be useful to track trends in your health. According to the source, it is especially important not to take the measurements as medical advice.
Men's Health advises using the data from your smartwatch as a supplement to medical advice, not as a replacement for it.
This message is a summary based on the mentioned source and is not medical advice. Always consult a doctor or pharmacist if you have complaints.