All Videos
199 videos from The Quantified Scientist
26:59Fitbit Air vs WHOOP | Scientific Test!
86.2K views
10:10NEW Oura Ring 5: Didn't See That Coming!
35.9K views
39:53Fitbit Air Ultimate Scientific Review!
253.8K views
23:50Huawei Watch Fit 5 - SCIENTIFIC Review!
28.1K views
13:51Fitbit: Scientific Sleep Test!
85.9K views
15:57The Fitbit Air Found WHOOP’s Weak Spot!
116.3K views
17:48Fitbit Air: The $99 Future of Fitbit (WHOOP alternative)
129.6K views
25:17Huawei Watch Fit 5 Pro - NEW SLEEP TRACKING! (+ HR and GPS Scientific Review)
55.3K views
14:25You Don't Need A New Smartwatch!
30.0K views
25:05Amazfit Active 3 Premium - FULL Scientific Review!
35.3K views
19:41Amazfit Helio Strap Accessory Upgrade! (Scientific Review)
43.2K views
25:35Huawei Band 11 - FULL Scientific Review!
29.4K views
16:08Garmin Is BAD At Sleep Tracking. And That's Okay!
37.5K views
17:03The Moto Watch Surprised Me (Motorola + Polar Review)
22.0K views
18:00Is the NEW Polar Street X Worth It?
20.3K views
16:20Garmin Sensors: Newer ≠ Better?
36.5K views
17:58VO2 Max Smartwatch Accuracy TESTED! (Apple, Garmin, COROS, Suunto, Polar, Pixel, Amazfit, Samsung)
45.1K views
29:57They Didn't Want Me To Review This - COROS Pace 4 (Scientific Test)
61.7K views
29:28Best Running Watch? Scientific Review: Huawei Watch GT Runner 2
35.1K views
22:48Huawei Band 11 Pro - Scientific Review
74.7K views
21:21HUME Band: DO NOT GET THIS! (Scientific Review)
74.1K views
36:08Amazfit T-Rex Ultra 2: A True Garmin Competitor
31.5K views
14:27Apple Watch VO2 Max Accuracy! (Scientific Review)
34.7K views
20:53We Studied 15 Wearables In A Sleep Lab!
51.2K views
14:13The Future Of Wearables (Is Here)!
59.0K views
18:47Amazfit Helio Strap: 6-Month Scientific Review
125.2K views
38:16Best Wearables I Use Every Day
70.7K views
18:47Polar Loop: Long-term Scientific Review (Watch Out WHOOP!)
60.4K views
26:55Galaxy Watch 8 Classic - SCIENTIFIC Review (Better Than Normal Version?)
23.4K views
10:41Best Wearables for Sleep Tracking: 2026 Update! (Scientific Review)
51.8K views
21:56Samsung Galaxy Ring in 2026: Updates Fixed It?! (Scientific Review)
34.5K views
18:02Best Wearables To Get Fit in 2026 According to Science!
83.1K views
11:59Your Apple Watch Just Got Better!
60.3K views
38:15NEW Amazfit Active Max - BEST Smartwatch Under 200$!? (Scientific Review)
58.1K views
21:28Can WHOOP and Oura Predict How You Feel? Scientific Test!
26.6K views
29:15Galaxy Watch Ultra - In-depth Scientific Review! (BEST Samsung Smartwatch Yet)
22.9K views
34:58Smartwatch Buying Guide: Best Pick for Every Person (Science‑Based)
136.0K views
19:03The Apple Watch’s Deep Sleep Problem!
56.0K views
14:00Garmin's WHOOP Alternative: A Science-based Wish List!
44.9K views
35:59Galaxy Watch 8 - FINALLY BETTER! (Scientific Review)
40.9K views
18:43BEST Budget Wearables Under 100$! Scientific Review.
48.7K views
19:59Best Wearables Under 250$. SCIENTIFIC REVIEW!
41.9K views
26:26NEW EDITION Amazfit T-Rex 3 Pro - Scientific Review Of Small T-Rex
37.1K views
13:12Garmin's Sleep Tracking - Scientific Test! (Garmin Index Sleep Monitor Review)
30.6K views
29:07Apple Watch Series 11 - Two Months Later! (Scientific Review)
50.5K views
37:45Garmin Venu 4 - Scientific Long-term Review!
55.8K views
16:27Your Amazfit Helio Strap Just Got Better!
147.4K views
19:17 AirPods Pro 3 - Scientific Long-term Review
18.9K views
26:01BEST Ways To Measure Heart Rate - Scientific Test!
58.1K views
17:22NEW Fitbit App: All-in on AI!
34.5K views
23:04Best Wearables for Sleep: Scientific Rankings
116.0K views
12:21FAKE Scientists & Cheap Hardware! HUME Band Review
157.6K views
35:57WHOOP Strap MG/5.0 - Ultimate Scientific Review (It Got BETTER!)
86.1K views
22:57Why The Apple Watch Is So GOOD!
18.6K views
39:30Pixel Watch 4 - Full Scientific Review (BETTER and BETTER, but...)
96.4K views
25:14Best Smartwatches For Sports & Health (Scientific Review)
165.0K views
8:27Amazfit Helio Strap SPECIAL EDITION: Amazing Changes?
75.4K views
23:21Apple Watch Ultra 3 - Full Scientific Review (Apple Did It!)
75.5K views
11:36NEW Pixel Watch & Fitbit Sleep Tracking! (Scientific Review)
36.6K views
27:19Suunto Vertical 2 - Scientific Review (I LOVE it, but it's FLAWED!)
43.3K views
13:51Scan Your Urine Every Day? Withings U-Scan Nutrio (Scientific Review)
23.0K views
16:16Apple Watch SE 3 - Scientific Initial Review (GREAT on a Budget!)
49.6K views
13:32AirPods Pro 3 - Scientific Heart Rate Test (BEST Product!)
43.2K views
15:17Apple Watch Series 11 - Scientific Review (GREAT Sports Watch!)
45.9K views
16:17Apple Watch Ultra 3 - Scientific Initial Review (Actually ULTRA!)
82.6K views
38:23Huawei Watch GT6 PRO - Scientific In-depth Review
90.6K views
36:06Huawei Watch GT6 - Scientific In-depth Review
70.8K views
8:34Polar Loop: Wear It On Your Biceps!💪 (Scientific Review)
48.5K views
9:31How Apple’s Sleep Score Works. Reverse-Engineering The Data!
34.6K views
23:02Polar Loop - Scientific Review and Initial Test! BETTER Than WHOOP?
173.7K views
22:38OnePlus Watch 3 - Scientific Initial Review
34.4K views
9:59NEW Apple Sleep Score - Scientific Test! Versus Oura and WHOOP!
233.0K views
7:27Apple Watch Ultra 3, Series 11 and SE3: NEW Health & Sports Features! AND Heart Rate On Airpods Pro!
42.5K views
21:44Apple Watch vs Galaxy Watch - Scientific Heart Rate Test (2025 Review)
20.5K views
10:14Suunto Race 2 vs Garmin - First Run and Ride (Scientific Review)
31.1K views
38:18Amazfit T-Rex 3 PRO - 399$ Garmin Fenix Pro KILLER? (Scientific Review)
64.2K views
14:45Polar Loop - The 199$ WHOOP Killer? A Scientist's Thoughts
104.6K views
36:56Garmin Forerunner 570 - Scientific Review (The Garmin I Would Get!)
36.9K views
24:21CMF Nothing Watch 3 Pro - GOOD Heart Rate for 99$! (Scientific Review)
48.3K views
14:54Suunto Race 2: What Suunto NEEDED To Improve! 17 Things To Know.
14.6K views
27:45WatchOS 26 - Scientific Review
33.6K views
16:25Google Pixel Watch 4 Hands-on - Improved GPS and Sleep Tracking! (A Scientist's Thoughts)
54.5K views
27:07Amazfit Balance 2 - Scientific Review
67.0K views
33:07Garmin Venu X1 - Scientific In-depth Review
27.0K views
24:37Garmin Vivoactive 6 - Scientific Data-driven Review (2025)
54.0K views
14:41RingConn Gen 2 Smart Ring - Initial Scientific Review
71.8K views
26:57My First Suunto's🤩! Race and Race S - Data-driven Scientific Review 📈
21.8K views
40:10Galaxy Watch Ultra "2" - Data-driven Scientific Review 📈 (Samsung 2025 Test)
87.8K views
30:11Garmin Forerunner 970 : Scientific Data-driven Review (My FAVOURITE Garmin!)
54.9K views
20:48Galaxy Watch 8 Review: Scientific Data! (A Weekend Testing Samsung)
68.3K views
35:5399$ WHOOP without subscription? Almost... Amazfit Helio Strap Scientific Review!
239.5K views
16:53Galaxy Watch 8 : Scientific Review! (Initial Samsung Test)
88.6K views
28:14Huawei Watch 5 - Scientific Review (Better & Worse Than Before!)
43.1K views
16:42Best Smartwatch For VO2 Max: Garmin vs WHOOP vs Polar (Scientific Review)
52.5K views
11:19NEW Samsung Galaxy Watch 8/Ultra: Better Sensors? A Scientist's Thoughts.
71.4K views
38:21Mi Band 10 - Scientific Review (AMAZING!)
276.0K views
43:19Ultrahuman Ring AIR - Scientific Review
66.4K views
6:25Polar Strap: WHOOP Alternative?
85.7K views
23:43Huawei Watch Fit 4 & 4 Pro - Scientific Review
125.4K views
18:02WHOOP MG vs 5.0 vs 4.0 - Scientific Heart Rate Review/Test
58.6K views
51:15NEW Polar Grit X2 - Affordable Outdoor Watch (Scientific Review)
30.2K views
38:22Amazfit Active 2 - Long-term Scientific Review
111.5K views
28:42WHOOP Strap MG/5.0 versus 4.0 - Worth The Upgrade? Scientific Review
77.6K views
27:56Huawei Watch Fit 4 Pro - Scientific Review (Almost )
212.8K views
56:13Eight Sleep Pod 5 Ultra - Scientific Review
48.8K views
18:40WHOOP Strap MG - Initial Scientific Review
98.6K views
10:07WHOOP Strap 5.0 and MG (2 New WHOOP Straps!) - Initial Thoughts
59.2K views
23:40Best Smartwatches in 2025: 2411 REAL Users!
63.6K views
32:25Amazfit Bip 6 Scientific Review (79$ Apple Watch Alternative?)
158.5K views
33:12Mi Band 9 Pro: Scientific Review (Cheap & Great!?)
61.5K views
30:01Garmin Connect+ Scientific Review: We Need To Talk!
37.3K views
25:10Huawei Band 10 In-Depth Scientific Review
139.1K views
18:03NEW WHOOP Sleep Tracking! Scientific Test🔬
56.9K views
18:01Too Hot When Exercising🏃🥵? Measure Your Core Body Temperature! CORE Gen 2 Scientific Review
23.5K views
16:19NEW WHOOP VO₂ Max : Scientific Initial Test!
75.5K views
31:08Level Up Your Health and Sports with Data 📈: A Scientist’s 2025 Tracking Blueprint
64.0K views
23:19Powerbeats Pro 2 - GREAT Heart Rate (In-depth Scientific Review)
25.2K views
74:02Best Smartwatch for Heart Rate: Scientific Review - 12 Smartwatches Tested on my Colleague Raphael
151.3K views
38:46Garmin Instinct 3 In-Depth Scientific Review
80.1K views
40:53Apple Watch Ultra 2 vs Samsung Watch Ultra - Sports & Health Scientific Review
78.2K views
25:12Amazfit Helio Ring Ultimate Scientific Review
92.3K views
36:26Garmin Enduro 3 Scientific Review
59.2K views
39:39Garmin Fenix 8: In-Depth Scientific Review
117.3K views
40:30Apple Watch 10 in 2025: Scientific Review
89.2K views
36:09Oura Ring 4 Ultimate Scientific Review
267.7K views
30:47Amazfit T-Rex 3 Scientific Review (Garmin Alternative, And Cheap!)
107.8K views
29:51WHOOP Strap Scientific Review: 1,460 Days of Testing
147.2K views
40:29Best Sports, Sleep & Health Tech: Best Deals! (Heart Rate, GPS, Sleep, ...)
203.9K views
33:11Mi Band 9: Scientific Review
201.4K views
34:04COROS PACE Pro Scientific Review (The Good & Bad)
75.9K views
27:56Polar Vantage M3: Scientific Review (Better Than Expected!)
48.5K views
12:16Apple Watch's New Vitals App - Oura/Whoop Replacement?
159.3K views
17:11Apple Watch Ultra 2 BLACK : Heart Rate Problems! (Scientific Review)
44.1K views
16:27Apple Watch Series 10 Review: Scientific Heart Rate Test!
107.6K views
31:23Huawei Watch GT5 vs GT5 Pro: Scientific Review
268.5K views
34:22Pixel Watch 3: Scientific Review (Best Android Smartwatch!)
229.2K views
27:05Galaxy Watch Ultra: In-depth Scientific Review
66.3K views
14:51Pixel Watch 3 - Why I'm Excited About Google’s Plans!
49.0K views
11:01CMF Watch Pro 2: Scientific Review (New Nothing Watch)
164.5K views
18:29Samsung Galaxy Ring: Scientific Review (Initial Test)
109.9K views
28:19Galaxy Watch Ultra vs Watch 7: Scientific Review (Initial Samsung Test)
223.1K views
19:54OnePlus Watch 2: Scientific Review
70.8K views
18:44How the Apple Watch Tracks Your Sleep (Scientific Review)
187.9K views
21:28Huawei Band 9: Full SCIENTIFIC Review (I Was WRONG! & Right…)
153.5K views
16:55WHOOP Just Got Better! Secret Update (2024)
94.8K views
21:44Huawei Watch Fit 3: Almost an Apple Watch (Scientific Review)
249.4K views
17:50Best Wearables for Sleep: Scientific Rankings
280.5K views
26:21Eight Sleep Pod 4 ULTRA: Scientifically Tested! High Price, Higher Quality?
63.9K views
13:40Huawei Band 9 : The Biggest Surprise This Year (and it’s not good…)
167.4K views
14:07Can Polar Beat Garmin? Polar's New Heart Rate Algorithm Tested!
49.0K views
27:48Samsung Galaxy Fit3 : Scientific Review (BEST deal?!)
301.5K views
29:01Garmin Forerunner 165 : Scientific Review (My Top Garmin!)
144.6K views
19:22Polar Grit X2 Pro Hands-On: A Scientist's Perspective (Heart Rate, GPS, Build)
25.9K views
27:10Fitbit Charge 6 : Long-term Scientific Review (2024)
137.9K views
28:45Google Pixel Watch 2 : Independent Scientific Review (2024 retest)
79.5K views
23:23TicWatch Pro 5 : Full Scientific Review (2 Displays = Worth It?)
27.2K views
32:45Garmin Vivoactive 5 : In-depth Scientific Test (Outshines the Venu 3?)
109.2K views
27:26CMF by Nothing Watch Pro : Scientific Review (Heart Rate, Sleep, GPS)
110.5K views
22:36Scientific Sleep Test : Oura, Fitbit/Google, Mi Band (More💰 = Better?)
77.7K views
26:20Amazfit Balance : Full Scientific Review (Best Amazfit Yet!)
131.1K views
19:37Samsung Galaxy Watch 6 & 5 : Scientific Sleep Test
38.9K views
17:41Amazing Sleep Tracking With A 90$ Polar Wearable!
137.8K views
26:07Best Health and Sports Trackers in 2023 : Scientist's Top Picks
128.3K views
14:53Polar Vantage V3 : Scientific Heart Rate Test
46.3K views
30:39Garmin Venu 3 & 3S : Scientific Test
155.9K views
20:17Mi Band 8 International : Scientific Test
172.4K views
22:13Fitbit Charge 6 : Scientific Test (IMPROVED by AI!)
171.8K views
23:09Google Pixel Watch 2 : Scientific Test (BEST on Android!)
204.3K views
42:03Apple Watch Ultra 2 (vs Series 9) : Scientific Review
97.1K views
45:00Apple Watch Series 9 : Full SCIENTIFIC Review
119.0K views
33:51Apple Watch Series 9 & Ultra 2: SCIENTIFIC Review
95.0K views
49:11Huawei Watch GT4 : Full SCIENTIFIC Review
273.7K views
32:15COROS PACE 3 : Scientific Review
183.4K views
38:26Samsung Galaxy Watch 6 : Full SCIENTIFIC Review
249.1K views
31:36Samsung Galaxy Watch 6 Classic : Full SCIENTIFIC Review
80.2K views
30:16Samsung Galaxy Watch 6 & Classic : Scientific Review
88.5K views
14:29COROS Heart Rate Monitor : The End Of ECG?
113.8K views
22:50Huawei Band 8 : Scientific Review
245.4K views
44:552023's Best Smartwatches : A Scientist/Reviewer's Daily Drivers
206.6K views
25:09Mi Band 8 Scientific Review
206.3K views
29:04Garmin’s New Heart Rate Sensor // Epix Pro Gen 2 & Fenix 7 Pro Review
177.1K views
30:10Garmin Forerunner 965 : Full Scientific Review
151.6K views
18:41Oura Ring 3 : Scientific Sleep Lab Test !
46.3K views
24:40Amazfit GTS 4 : Full Scientific Review ( Form over Function… )
91.4K views
20:35Apple Watch : Scientific Sleep Lab Test ( Ultra vs 8 )
67.3K views
22:57Eight Sleep Pod 3 : Scientific Test and Review
42.6K views
24:56Amazfit GTR 4 : Scientific Review (beautiful but bad...)
114.7K views
18:38Oura Ring 3 : Improved Sleep Stage Tracking! (Finally...)
89.3K views
35:55Apple Watch Series 8 : Scientific Long-term Review
85.0K views
17:23Apple Watch Ultra Live Heart Rate : Scientific Review
39.2K views
22:46Oura Ring 3 : Scientific Sleep & Heart Rate Review 2023
66.1K views
33:58Apple Watch Ultra : Scientific Long-term Review
147.8K views
28:59Best Smartwatches & Health Trackers : Scientific Recommendations
726.6K views
12:08Apple Watch Ultra vs Whoop Strap 4.0 vs Oura Ring 3: Can they detect my COVID-19 infection?
46.3K views
22:14Fitbit Inspire 3 : Full Scientific Review
253.4K views
21:50Best Smartwatch for Every Budget! Scientific Health Tracking Review of 75 Watches (2022)
560.1K views
26:30Fitbit Versa 4 : Full Scientific Review (+ Sense 2 Comparison)
61.7K views
26:50Fitbit Sense 2 : Full Scientific Review
107.6K views
26:56Google Pixel Watch : Scientific Review
113.6K views