![]() Six of the seven instances where my Apple Watch has recorded longer times asleep than times in bed in the past 30 days. Shows "Time asleep" as longer than "Time in bed" about half the time Many factors can make this more or less accurate, like how tight or loose your device is, which wrist you wear it on, and how much you move at night. On other days the Apple Watch marks sleep onset earlier than my Fitbit, resulting in times like the ones shown above. ![]() While my Fitbit showed less time asleep than the Apple Watch did, by an average of 25 minutes, the data I've seen over the past couple of months makes comparisons between both devices a toss-up: Some days my Fitbit says I fell asleep several minutes or up to an hour before the Apple Watch marked the onset of sleep, times when I was lying in bed reading my Kindle or, yes, watching TikTok.Īlso: How to get (great) free books on Kindle Asleep and awake times are pretty even for both, with less than a 20-minute difference Metric However, the biggest differences are in Light/Core sleep and REM sleep the former is marked as over an hour longer by my Apple Watch 7, while the REM sleep is about 40 minutes longer. Review: I put the Apple Watch Ultra through a Tough MudderĪs you can see on the table above, my Apple Watch tends to track longer time asleep than the Fitbit by about 25 minutes on average, while also tracking slightly more time awake throughout the night. While you sleep during a polysomnogram, an electroencephalogram (EEG) can be performed to measure your brain waves, aka the electrical activity in your brain as you navigate different sleep stages.Īll these fancy words basically mean that, at this point in modern technology, you can't track sleep cycles with 100% accuracy with devices you wear on your wrist, but you can make approximations with a combination of different data sources and a great algorithm or two. Polysomnography analyzes your sleep by tracking your brain waves, breathing and heart rate, blood oxygen level, and eye and body movements throughout the night. Tracking your sleep stages and cycles is most accurately done by polysomnography it's not as simple as monitoring your heart rate all night. The Apple Watch shows more light or core sleep and less deep sleep than the Fitbit Metric My watch leveled up in the sleep tracking department to better compete with my Fitbit.ġ. That changed with the release of WatchOS 9 in September 2022, which enables compatible Apple Watches to track sleep stages and cycles. Review: Do sleep earbuds actually work? I tested the latest pair to find out ![]() Plus, Apple hadn't released WatchOS 9 yet, so there was no native tracking feature that could show me my sleep cycles and stages like my precious Fitbit could. After it said the giraffe is my sleep animal, my Inspire 2 and I were buddies. The perfectionist in me quickly accepted the challenge and I became enthralled by sleep data I would wake up every morning eager to see my stats and began making conscious decisions looking to get not just more sleep, but better-quality sleep, all with the purpose of improving my score.Īround this time, I also got an Apple Watch 7, but found I couldn't part with my Fitbit. Closeįitness trackers offer a reasonably-priced alternative to smartwatches. If you see inaccuracies in our content, please report the mistake via this form. If we have made an error or published misleading information, we will correct or clarify the article. Our editors thoroughly review and fact-check every article to ensure that our content meets the highest standards. Our goal is to deliver the most accurate information and the most knowledgeable advice possible in order to help you make smarter buying decisions on tech gear and a wide array of products and services. ZDNET's editorial team writes on behalf of you, our reader. Indeed, we follow strict guidelines that ensure our editorial content is never influenced by advertisers. Neither ZDNET nor the author are compensated for these independent reviews. This helps support our work, but does not affect what we cover or how, and it does not affect the price you pay. When you click through from our site to a retailer and buy a product or service, we may earn affiliate commissions. And we pore over customer reviews to find out what matters to real people who already own and use the products and services we’re assessing. We gather data from the best available sources, including vendor and retailer listings as well as other relevant and independent reviews sites. ZDNET's recommendations are based on many hours of testing, research, and comparison shopping.
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