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[@thequantifiedscientist](/creator/youtube/thequantifiedscientist)
"Suunto Vertical X - Scientific Review (I LOVE it but it's FLAWED)"  
[YouTube Link](https://youtube.com/watch?v=ZPz1Fu2lAC4) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2025-09-30T08:00Z 355K followers, 21.3K engagements


"Best Smartwatches in 2025: 2411 REAL Users"  
[YouTube Link](https://youtube.com/watch?v=37B3EgyO5nU) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2025-05-04T12:00Z 355K followers, 62.3K engagements


"Best Smartwatches For Sports & Health (Scientific Review)"  
[YouTube Link](https://youtube.com/watch?v=e5tSe2gCVdY) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2025-10-07T06:00Z 355K followers, 40.8K engagements


"NEW WHOOP VO Max : Scientific Initial Test"  
[YouTube Link](https://youtube.com/watch?v=7zcXM1IYtqU) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2025-03-13T11:30Z 355K followers, 73.1K engagements


"WHOOP MG vs XXX vs XXX - Scientific Heart Rate Review/Test"  
[YouTube Link](https://youtube.com/watch?v=9SzUDTBK-i0) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2025-06-11T13:00Z 355K followers, 50.2K engagements


"Apple Watch XX in 2025: Scientific Review"  
[YouTube Link](https://youtube.com/watch?v=LLhcs58lUPE) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2025-01-04T14:00Z 355K followers, 86.2K engagements


"Polar Loop - The 199$ WHOOP Killer A Scientist's Thoughts"  
[YouTube Link](https://youtube.com/watch?v=Rf8MkVrXYzQ) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2025-09-03T10:00Z 355K followers, 100K engagements


"Apple Watch SE X - Scientific Initial Review (GREAT on a Budget)"  
[YouTube Link](https://youtube.com/watch?v=cOn6TfKPVLE) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2025-09-21T18:36Z 355K followers, 31.1K engagements


"Best Smartwatch For VO2 Max: Garmin vs WHOOP vs Polar (Scientific Review)"  
[YouTube Link](https://youtube.com/watch?v=izXiPKYoSiU) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2025-07-12T12:01Z 355K followers, 46.5K engagements


"Apple Watch vs Galaxy Watch - Scientific Heart Rate Test (2025 Review)"  
[YouTube Link](https://youtube.com/watch?v=KbkBZ2VV2k0) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2025-09-07T12:00Z 355K followers, 16.9K engagements


"Oura Ring X Ultimate Scientific Review"  
[YouTube Link](https://youtube.com/watch?v=MhMKtqY6CmM) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2024-12-28T14:00Z 355K followers, 197.2K engagements


"NEW Polar Grit X2 - Affordable Outdoor Watch (Scientific Review)"  
[YouTube Link](https://youtube.com/watch?v=N5w_s4LsYBc) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2025-06-04T10:00Z 355K followers, 25.4K engagements


"Polar Strap: WHOOP Alternative"  
[YouTube Link](https://youtube.com/watch?v=m6JhFZ6HBmc) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2025-06-17T10:01Z 355K followers, 83.3K engagements


"Amazfit Balance X - Scientific Review"  
[YouTube Link](https://youtube.com/watch?v=utE4_8Io9CA) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2025-08-16T12:01Z 355K followers, 37.8K engagements


"WHOOP Strap MG - Initial Scientific Review"  
[YouTube Link](https://youtube.com/watch?v=E9w_Ly3h3ao) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2025-05-11T18:53Z 355K followers, 98.2K engagements


"99$ WHOOP without subscription Almost. Amazfit Helio Strap Scientific Review"  
[YouTube Link](https://youtube.com/watch?v=GcGjIUJv0us) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2025-07-20T12:00Z 355K followers, 178.8K engagements


"Polar Loop - Scientific Review and Initial Test BETTER Than WHOOP"  
[YouTube Link](https://youtube.com/watch?v=TSv6gNgsovQ) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2025-09-13T19:47Z 355K followers, 129K engagements


"Amazfit Helio Ring Ultimate Scientific Review"  
[YouTube Link](https://youtube.com/watch?v=u6xpbMQD6Qk) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2025-01-25T14:01Z 355K followers, 69.6K engagements


"Huawei Watch GT6 PRO - Scientific In-depth Review"  
[YouTube Link](https://youtube.com/watch?v=uz7jXw9_C6o) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2025-09-19T13:02Z 355K followers, 44.9K engagements


"Ultrahuman Ring AIR - Scientific Review"  
[YouTube Link](https://youtube.com/watch?v=Y04WI46xvsc) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2025-06-21T13:01Z 355K followers, 43.6K engagements


"NEW Apple Sleep Score - Scientific Test Versus Oura and WHOOP"  
[YouTube Link](https://youtube.com/watch?v=ZxEhj0qWAe0) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2025-09-11T14:31Z 355K followers, 190K engagements


"Amazfit T-Rex X PRO - 399$ Garmin Fenix Pro KILLER (Scientific Review)"  
[YouTube Link](https://youtube.com/watch?v=sv3numV-cjU) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2025-09-05T08:30Z 355K followers, 44.8K engagements


"Fitbit Inspire X : Full Scientific Review"  
[YouTube Link](https://youtube.com/watch?v=vGPV8CYGwrI) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2022-11-28T14:00Z 355K followers, 234.6K engagements


"WHOOP Strap MG/5.0 versus XXX - Worth The Upgrade Scientific Review"  
[YouTube Link](https://youtube.com/watch?v=9g-upusFmPM) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2025-05-18T18:45Z 355K followers, 75.5K engagements


"Amazfit Active X - Long-term Scientific Review"  
[YouTube Link](https://youtube.com/watch?v=6lWySkGnYE8) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2025-05-31T12:00Z 355K followers, 73.8K engagements


"COROS Heart Rate Monitor : The End Of ECG"  
[YouTube Link](https://youtube.com/watch?v=787qQcuEkIg) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2023-07-27T14:00Z 355K followers, 100.8K engagements


"WHOOP Strap Scientific Review: 1460 Days of Testing"  
[YouTube Link](https://youtube.com/watch?v=BApqhnHMMM8) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2024-11-28T14:00Z 355K followers, 143.5K engagements


"COROS PACE X : Scientific Review"  
[YouTube Link](https://youtube.com/watch?v=KPCW69V32yg) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2023-08-29T13:00Z 355K followers, 179.4K engagements


"Apple Watch's New Vitals App - Oura/Whoop Replacement"  
[YouTube Link](https://youtube.com/watch?v=L0Inhmh6VAM) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2024-10-19T13:00Z 355K followers, 155.6K engagements


"Amazfit T-Rex X Scientific Review (Garmin Alternative And Cheap)"  
[YouTube Link](https://youtube.com/watch?v=MlCVYrZEA6A) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2024-12-21T14:00Z 355K followers, 99.7K engagements


"Withings Sleep Analyzer: Science Test (2021 Review)"  
[YouTube Link](https://youtube.com/watch?v=Nh2J_cP-C0E) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2021-03-07T14:00Z 355K followers, 109.2K engagements


"Suunto Race X vs Garmin - First Run and Ride (Scientific Review)"  
[YouTube Link](https://youtube.com/watch?v=PW4VOidXq6k) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2025-09-06T12:00Z 355K followers, 18.3K engagements


"COROS PACE Pro Scientific Review (The Good & Bad)"  
[YouTube Link](https://youtube.com/watch?v=WdqxlXstAKA) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2024-10-31T12:00Z 355K followers, 67.7K engagements


"Polar H10 Scientific Review: Best for Heart Rate (99.6% Accurate)"  
[YouTube Link](https://youtube.com/watch?v=YGMZNF7Lnmo) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2022-07-01T13:00Z 355K followers, 220.4K engagements


"Amazfit Bip X Scientific Review (79$ Apple Watch Alternative)"  
[YouTube Link](https://youtube.com/watch?v=Ywascg-ugms) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2025-04-26T13:00Z 355K followers, 105.2K engagements


"Garmin Fenix 8: In-Depth Scientific Review"  
[YouTube Link](https://youtube.com/watch?v=p6t7S3WYfp8) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2025-01-11T14:00Z 355K followers, 102.5K engagements


"Fitbit Charge X : Scientific Test (IMPROVED by AI)"  
[YouTube Link](https://youtube.com/watch?v=pYqvyWkEnoE) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2023-10-19T12:00Z 355K followers, 163.6K engagements


"Huawei Watch Fit X Pro - Scientific Review (Almost )"  
[YouTube Link](https://youtube.com/watch?v=ts4oLnJ0ams) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2025-05-15T14:01Z 355K followers, 174.7K engagements


"Amazing Sleep Tracking With A 90$ Polar Wearable"  
[YouTube Link](https://youtube.com/watch?v=9ATPmTWcB80) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2023-12-10T14:00Z 355K followers, 126.9K engagements


"Huawei Watch X - Scientific Review (Better & Worse Than Before)"  
[YouTube Link](https://youtube.com/watch?v=EKsrQep9Ycw) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2025-07-15T12:00Z 355K followers, 33.8K engagements


"Polar Loop: Wear It On Your Biceps💪 (Scientific Review)"  
[YouTube Link](https://youtube.com/watch?v=PV9ECvF_-gY) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2025-09-18T14:00Z 355K followers, 37K engagements


"Polar Verity Sense Scientific Review (versus OH1+ H10)"  
[YouTube Link](https://youtube.com/watch?v=ivjzK1bPNN4) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2021-05-23T13:00Z 355K followers, 124.5K engagements


"WHOOP Strap MG/5.0 - Ultimate Scientific Review (It Got BETTER)"  
[YouTube Link](https://youtube.com/watch?v=zVOd86FFlP4) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2025-10-18T12:01Z 355K followers, 13.8K engagements


"Withings Scanwatch Horizon: Scientific Test🧪 (Heart Rate Sleep SpO2)"  
[YouTube Link](https://youtube.com/watch?v=-cZYbf_Zhoc) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2021-12-29T15:00Z 355K followers, 96.4K engagements


"AirPods Pro X - Scientific Heart Rate Test (BEST Product)"  
[YouTube Link](https://youtube.com/watch?v=2emhVpn539E) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2025-09-20T18:46Z 355K followers, 37.9K engagements


"Withings Scanwatch: Sleep Tracking & Sleep Apnea (Interview w/ @withings Pt. 2)"  
[YouTube Link](https://youtube.com/watch?v=7RdAcq3lWvA) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2021-04-25T13:00Z 355K followers, 21.4K engagements


"Withings Thermo Review: Ultimate Science Test (COVID-19 special)"  
[YouTube Link](https://youtube.com/watch?v=7ltsFgWnWGU) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2020-06-28T13:15Z 355K followers, 36.3K engagements


"Withings Scanwatch Heart Rate Test (Review)"  
[YouTube Link](https://youtube.com/watch?v=KjemOE2eHcY) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2020-08-29T15:07Z 355K followers, 41.3K engagements


"Scan Your Urine Every Day Withings U-Scan Nutrio (Scientific Review)"  
[YouTube Link](https://youtube.com/watch?v=P1u5Pq6YFCw) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2025-09-25T12:00Z 355K followers, 16.7K engagements


"Amazfit Helio Strap SPECIAL EDITION: Amazing Changes"  
[YouTube Link](https://youtube.com/watch?v=QtRH1eBM3_Y) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2025-10-06T12:00Z 355K followers, 44.7K engagements


"Apple Watch Ultra X - Full Scientific Review (Apple Did It)"  
[YouTube Link](https://youtube.com/watch?v=VMec48v1PsA) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2025-10-05T12:01Z 355K followers, 52.7K engagements


"Google Pixel Watch X Hands-on - Improved GPS and Sleep Tracking (A Scientist's Thoughts)"  
[YouTube Link](https://youtube.com/watch?v=kGaZNl0Z0DM) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2025-08-20T16:01Z 355K followers, 49.7K engagements


"Polar OH1+ Review: Finally An Optical Sensor of ECG Quality"  
[YouTube Link](https://youtube.com/watch?v=qOFXzgtb3eE) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2021-02-10T14:00Z 355K followers, 57.1K engagements


"NEW WHOOP Sleep Tracking Scientific Test🔬"  
[YouTube Link](https://youtube.com/watch?v=znnjQFiRyqg) [@thequantifiedscientist](/creator/youtube/thequantifiedscientist) 2025-04-02T12:01Z 355K followers, 55.5K engagements