Apple Watch Series 8 : Scientific Long-term Review

🔴 General Amazon link*: https://geni.us/thequantifiedscientist 🔴 Apple Watch 8 link*: https://geni.us/AppleWatchSeries8 🟢 Instagram: https://www.instagram.com/quantified_scientist/ 🟠 Shorts: https://studio.youtube.com/channel/UCcpARGzXNaC62UQWns2dh2Q 🔵 Newsletter: www.robterhorst.com 🟡 Twitter: @QuantifiedRob * Affiliate (paid) links support the channel by earning me a commission on any sale, and it doesn't cost you any more! My opinions are completely my own, and this content is not sponsored. ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 👇 $30 off any new WHOOP membership, affiliate* (paid) link, supports the channel!👇 join.whoop.com/QuantifiedScientist ($30 off any new WHOOP membership) ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 👇Amazon Affiliate* (paid) links. Supports the channel, doesn't cost you any more!👇 ▬▬▬▬▬▬▬▬▬▬BEST WATCHES▬▬▬▬▬▬▬▬▬▬ Whoop Strap 4.0: join.whoop.com/QuantifiedScientist ($30 off any new WHOOP membership) General Amazon link: https://geni.us/thequantifiedscientist Huawei Watch Fit 2: https://geni.us/HuaweiWatchFit2 Huawei Watch GT3 Pro: https://geni.us/thequantifiedscientist Huawei Watch GT Runner: https://geni.us/HuaweiWatchGtRunner Huawei Watch GT 3: https://geni.us/Huawei_Watch_GT3 Apple Watch Ultra: https://geni.us/AppleWatch_Ultra Apple Watch 8: https://geni.us/AppleWatchSeries8 Apple Watch 7 41 mm: https://geni.us/AppleWatch7_41 Apple Watch 7 45 mm: https://geni.us/AppleWatch7 Apple Watch 6: https://geni.us/0gNGeO Apple Watch SE: https://geni.us/Apple_Watch_SE_44 Samsung Galaxy Watch 5: https://geni.us/SamsungWatch5 Garmin Fenix 7: https://geni.us/Garmin_Fenix_7 Garmin Venu 2: https://geni.us/Garmin_Venu_2 Garmin Instinct 2: https://geni.us/Garmin_Instinct_2 Polar H10: https://geni.us/hnXc Polar OH1+: https://geni.us/D7bs5 Polar Verity Sense: https://geni.us/polarVeritySense ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 📸My Gear* (paid links, supports the channel and doesn’t cost you any more)📸 Camera body (main): https://geni.us/SonyA6600_body Camera lense (main): https://geni.us/SigmaContemporary Camera (B-roll): https://geni.us/CanonEosM50MarkII and https://geni.us/Sony_ZVE10 Light: https://geni.us/Godox_VL150 Softbox: https://geni.us/NiceFotoSoftbox Light stand: https://geni.us/WalimexLightstand ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ Timestamps: 00:00 Intro 02:07 Ultra Updates 02:47 Heart Rate Test 1: Spinning 06:52 Heart Rate Test 2: Cycling 10:13 Heart Rate Test 3: Running 13:11 Heart Rate Test 4: Weight Lifting 15:30 Heart Rate Test 5: Yoga 16:13 Heart Rate Test Conclusions 16:54 Sleep Stage Test 1: Sleep Stages 22:36 Sleep Stage Test 2: Overview 24:08 GPS Tracking Test 27:12 SpO2 Test 1: High Oxygen Detection 29:20 SpO2 Test 2: Low Oxygen Detection 31:19 Health Tracking Test 33:19 Conclusions 33:50 Apple Watch Ultra Problems 34:51 Recommendations Apple Watches have consistently been amongst the best watches when it comes to accurately tracking your health and sports. But, how does the Apple Watch Series 8 stack up against the competition after 5 months of testing? In this video I’ll be sharing a scientific review of the Apple Watch 8 based on a lot of data. Over these past few months, I’ve thoroughly tested the Apple Watch Series 8, collecting data from 139 workouts, 60 nights of sleep, 84 GPS tests, and 2 tests of low oxygen saturation, to give you a comprehensive look at the sports and health tracking capabilities of the Apple Watch Series 8. On this channel I do not focus on features and looks, instead, we'll be focusing on what really matters to many of you - the accuracy and reliability of the measurements that the Apple Watch 8 takes. I’ll systematically analyze all the data I collected. We will compare 60 nights of sleep data from the Apple Watch 8 to that of an EEG device which can actually measure brainwaves, and we’ll compare the heart rate measurements of the Apple Watch to an ECG device. Next, we will be checking if the GPS signals are consistent and we will also test the Apple Watch in a low oxygen environment. This information should help you determine whether the health tracking features of the Apple Watch Series 8 are suitable for your personal needs. It is worth mentioning that while the Apple Watch 8 lived up to my expectations in many ways, there are a few crucial aspects where it actually showed some problems that I have not covered in my earlier videos. I was able to unravel these issues because I updated the computer code I use in my analysis, allowing me to better judge the performance of the Apple Watch Series 8. So sit back, relax, and let's dive into this scientific review of the Apple Watch.