Waking up exhausted but your sleep tracker says you slept great? You aren't imagining it. Here is how your menstrual cycle ...

While most smartwatches offer basic sleep tracking out of the box, there are many hidden features that can elevate your experience. Here are some of them.

What gets measured gets improved is the whole idea behind habit tracking. If you’ve ever struggled with implementing a new habit, from drinking more water to getting eight hours of sleep, tracking ...

Fitbit has some of the best Bluetooth gadgets that one can pick up. They make for a fantastic digital companion, only rivaled perhaps by one of those high-tech robotic pets. The tracking functionality ...

NextSense's EEG-equipped wireless earbuds are an intriguing idea, but I'm not sure if sleep-tracking can save me from constant tiredness. Reading time 9 minutes Man, I love sleep. I’m just a sleepy ...

Add Yahoo as a preferred source to see more of our stories on Google. Man writing down thoughts - stock photo - Getty Images What gets measured gets improved is the whole idea behind habit tracking.

A person sleeping in bed with a circular smartwatch visible on his wrist. - Andrey_Popov/Shutterstock One of the core things I love about my smartwatch, fitness ...