Best Wearables To Get Fit in 2026 According to Science! @TheQuantifiedScientist

Uploaded January 2026 | Updated September 2026, 2 weeks ago

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🔴 Eight sleep best $$$ (€) discount*: eight-sleep.ioym.net/TheQuantifiedScientist + add code “TQS” for full discount

🔴 Whoop Strap MG / 5.0*: join.whoop.com/QuantifiedScientist
(best $$$ off any new WHOOP membership)

🔴 Anything on Amazon*: geni.us/thequantifiedscientist

🔴 Oura Ring Link: I recommend you search for a discount on reddit with the "Refer-A-Friend" program! If you can’t find one: ouraring.sjv.io/Oura4 * (affiliate link that supports the channel, but doesn't have a discount)

🔴 Best Running app Runna*: web.runna.com/redeem?code=QUANT

🔴 Strava Premium 20%*: strava.com/subscribe/checkout?code=QUANTIFIEDSCIENTIST

🔴 Levels CGM app best offer $$$ (USA only!)*: levels.link/QS

🔴 Anything on Amazon*: geni.us/thequantifiedscientist

☝️Affiliate* (paid) links. Supports the channel, doesn't cost you any more!☝️
🟢 Instagram: instagram.com/quantified_scientist
🟡 Strava: strava.com/athletes/5206985
🟠 Shorts: youtube.com/@smartwatchshorts
🔵 Newsletter: 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.
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PodCast: (soon to come) youtube.com/@FitForScience @FitForScience

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Video edited by Alex: https://linktr.ee/allexb

📸My Gear* (paid links, supports the channel and doesn’t cost you any more)📸
Camera body (main): geni.us/SonyA6600_body
Camera lens (main): geni.us/SigmaContemporary
Camera (B-roll 1): geni.us/Sony_ZVE1
Camera (B-roll 2): geni.us/CanonEosM50MarkII and geni.us/Sony_ZVE10
Light: geni.us/Godox_VL150
Softbox: geni.us/NiceFotoSoftbox
Light stand: geni.us/WalimexLightstand
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Reference devices:
ZMax + Dreamento: biorxiv.org/content/10.1101/2023.08.18.553744v1 & github.com/dreamento/dreamento
Polar H10: pubmed.ncbi.nlm.nih.gov/31004219
🔴 Polar H10: geni.us/hnXc

Best Wearables To Get Fit in 2026 According to Science!

Eight Sleep Pod 5 Ultra - Scientific Review

WHOOP Strap Scientific Review: 1,460 Days of Testing

Mi Band 8 International : Scientific Test

Polar Grit X2 Pro Hands-On: A Scientists Perspective (Heart Rate, GPS, Build)

$Samsung Galaxy Fit3 : Scientific Review (BEST deal?!) 🔴 Best place to get a Galaxy Fit3* ;-) : https://geni.us/SamsungGalaxyFit3 🔴 General Amazon link*: https://geni.us/thequantifiedscientist 🟢 Instagram: https://www.instagram.com/quantified_scientist/ 🟠 Shorts: https://www.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 doesnt 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!👇 https://join.whoop.com/QuantifiedScientist ($30 off any new WHOOP membership) ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 👇Amazon Affiliate* (paid) links. Supports the channel, doesnt cost you any more!👇 ▬▬▬▬▬▬▬▬▬▬BEST DEVICES▬▬▬▬▬▬▬▬▬▬ 🔴 Oura Link: I recommend you search for a discount on reddit with the Refer-A-Friend program! If you can’t find one: https://ouraring.sjv.io/rQ4L33 (affiliate link that supports the channel, but doesnt have a discount) 🔴 Whoop Strap 4.0: https://join.whoop.com/QuantifiedScientist ($30 off any new WHOOP membership) 🔴 Eight sleep 200$/150$ discount*: https://eight-sleep.ioym.net/TheQuantifiedScientist + add code “TQS” for 200$/150$ total discount 🔴 General Amazon link*: https://geni.us/thequantifiedscientist ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 📸My Gear* (paid links, supports the channel and doesn’t cost you any more)📸 Camera body (main): https://geni.us/SonyA6600_body Camera lens (main): https://geni.us/SigmaContemporary Camera (B-roll 1): https://geni.us/Sony_ZVE1 Camera (B-roll 2): 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 ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ Reference devices: ZMax + Dreamento: https://www.biorxiv.org/content/10.1101/2023.08.18.553744v1 & https://github.com/dreamento/dreamento Polar H10: https://pubmed.ncbi.nlm.nih.gov/31004219/ 🔴 Polar H10: https://geni.us/hnXc Intro Music from #Uppbeat (free for Creators!): https://uppbeat.io/t/moire/new-life License code: OBLD6VBBCTRDFZQP Timestamps: 00:00 Quick Intro 00:40 Heart Rate Test 1 : Indoor Cycling 05:33 Heart Rate Test 2 : Running 08:57 Heart Rate Test 3 : Outdoor Cycling 11:22 Heart Rate Test 4 : Weight Lifting 13:50 Heart Rate Test 5 : 2nd Person Raphael 18:24 Sleep Test 22:35 Sleep Test : Comparison w/ Other Watches 25:41 Limitations, Recommendations & Conclusions The Samsung Galaxy Fit 3 seems like a no-brainer; it has most of the Galaxy Watch’s functionalities, but at a fraction of the price. I bought this watch for the equivalent of about 65 dollars. Compare that to the Galaxy Watch 6, which is about 3-4 times more expensive at roughly 220 dollars. But, how does the actual performance of the Galaxy Fit 3 compare to the Galaxy Watch when it comes to health and sports tracking? Let’s find out: in this video I will systematically and scientifically test the heart rate and sleep tracking of the Galaxy Fit 3 and compare it to the performance of the Galaxy Watch, and I found some things I did not expect. As always, I want to start with the heart rate tracking performance, which I tested on myself and on my colleague Raphael. Now, normally, I would next take a look at the GPS tracking performance. However, the Galaxy Fit 3 does not have built-in GPS, but it uses your phone’s GPS instead. So it will do just as well as your phone is at GPS tracking. So, what is my overall conclusion on the Galaxy Fit 3, is it a better bang for buck than the Galaxy Watch 6? Well, maybe… It is a decent smartwatch, and actually has way better battery life than the Galaxy Watch 6. The Galaxy Watch 6 is rated at about 40 hours, whereas the Galaxy Fit 3 is rated at 13 days. However, the Fit 3 just doesn’t feel very premium. It is very similar to so many other smart bands out there, like the Huawei Watch Fit 2 for instance, which is a bit more expensive, but has far superior heart rate tracking. Of course, that isn’t part of the Samsung ecosystem. However, if you want to stay in the Samsung ecosystem, I would personally rather buy an older Galaxy Watch, like the Samsung Galaxy Watch 4, than the Galaxy Fit3. Honestly, the recent Galaxy Watches, so the 4, 5 and 6 aren’t all that different, and you might be able to find the 4 or 5 for just over 100 dollars, which would be my preference. As you saw, in general, Galaxy Watches aren’t the best performers on me in terms of heart rate and sleep stage tracking, they are not terrible, but if you are not committed to the Samsung ecosystem, there are better choices in my opinion. Now, of course the results I showed you might vary from person-to-person, so please also check some other reviewers.$

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