This optical heart-rate module reference design incorporates red and infrared LEDs, a sensor, power subsystem, and logic level translation. Measuring 13mm x 13mm, this tiny, low-power board can be ...
The MAXREFDES117# reference design is a low power, optical heart-rate module complete with integrated red and IR LEDs, and a power supply. This tiny board, perfect for wearable projects, may be placed ...
With great battery life and a reasonable price tag, the Coros Heart Rate Monitor nails the basics. Accuracy stood up to testing – and while an EKG chest strap might have the edge in terms of pro-grade ...
Alena is a professional writer, editor and manager with a lifelong passion for helping others live well. She is also a registered yoga teacher (RYT-200) and a functional medicine certified health ...
Xiaomi has launched the Watch S4 41 mm in markets outside China, following its release in June 2025. In the EU, it is priced at €159.99, while the Milanese Strap version costs €219.99. The Watch S4 41 ...
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The heart rate zone formula is flawed, especially for women. Here's how to rethink your training.
The heart rate zone formula is flawed, especially for women. Here's how to rethink your training. These days, everyone from ...
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How to set your heart rate zones
Understanding your heart rate can be helpful to calibrate your perceived exertion, especially on easy and steady runs. This ...
Heart rate reserve (HRR) is the difference between your resting heart rate and your maximum heart rate. Knowing this number can help you train and work on your fitness goals. Your heart rate reserve ...
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