How wearable heart-rate monitors work, and which is best for you


If your considering a wearable heart rate monitor for your fitness regime this is a good article to review.

Chest straps and optical heart-rate monitors are the two most common types of pulse trackers available for modern wearables, and they both use similar methods to measure your pulse. However, their key differences in methodology and design will dictate which device you choose when picking a workout companion.

Source: Arstechnica