How do wearables measure heart rate?

How do wearables measure heart rate?

Wearables typically use optical sensors that detect blood flow through your skin. They shine a light and measure the amount of light absorbed by the blood.

Are there different types of sensors used?

Yes, there are mainly two types: optical sensors and electrical sensors. Optical sensors are common in fitness trackers, while electrical sensors are often found in devices like ECG monitors.

How accurate are these measurements?

The accuracy can vary. Optical sensors are generally accurate for resting heart rates but may struggle during intense exercise. Electrical sensors tend to be more precise.

Can wearables track other health metrics?

Absolutely! Many wearables can track metrics like steps, sleep quality, and even blood oxygen levels.

What should I look for when choosing a wearable?

Look for features like sensor type, battery life, compatibility with apps, and additional health metrics that are important to you.