The settings are scattered around your phone and watch. Here's where to find them.

Apple Watch users who wake up to inconsistent sleep data have a real problem: the device tracks sleep using optical ...

Wearable fitness trackers provide sleep data that can give you insights about the duration and quality of your sleep. A doctor explains which metrics matter the most, and how to use the data to ...

Plus, doctors’ number-one pick and their take on the devices.

ATLANTA — Your watch says you had three hours of deep sleep. Should you believe it? Millions of people rely on phone apps and wearable devices like rings, smartwatches and sensors to monitor how well ...

How does a sleep tracker on your finger compare to one in a bed? I tested Sleep Number and Oura for a month to find out. Plus, expert sleep-tracking tips. Aly Lopez Former Writer I Aly Lopez was a ...

A restful night's sleep is something many people wish they could achieve but never do. With the demands of work, family and everything in-between, many people find themselves tossing and turning in ...

Until I got my Oura Ring last year, I had no idea if I was getting high-quality sleep. I was exhausted almost every morning, and I couldn’t find any patterns in my routine that could explain why. If, ...

Sleep Stop waking up at 3 am — I asked 5 doctors for their best sleep hygiene tips and here’s what they said Sleep Science says the '60-minute bedtime rule' is crucial for longevity — here's why and ...

After I stopped tracking my sleep so thoroughly, I noticed a big difference in my sleep quality and quantity. Call it ‘ignorance is bliss’ but by not fixating on my sleep score, I got back into a good ...