Amazfit Active 2 - Long-term Scientific Review

▬▬▬▬▬▬▬▬▬▬👇DISCOUNTS/AFFILIATES*!👇▬▬▬▬▬▬▬▬▬▬ 🔴 Anything on Amazon*: https://geni.us/thequantifiedscientist 🔴 Whoop Strap 5.0/MG*: https://join.whoop.com/QuantifiedScientist (best $$$ off any new WHOOP membership) 🔴 Eight sleep best $$$ (€€€) discount*: https://eight-sleep.ioym.net/TheQuantifiedScientist + add code “TQS” for full discount 🔴 Levels CGM app best offer $$$ (USA only!)*: http://levels.link/QS 🔴 Best Running app Runna*: https://web.runna.com/redeem?code=QUANT 🔴 Oura Ring 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/Oura4 * (affiliate link that supports the channel, but doesn't have a discount) ☝️Affiliate* (paid) links. Supports the channel, doesn't cost you any more!☝️ 🟢 Instagram: https://www.instagram.com/quantified_scientist/ 🟡 Strava: https://www.strava.com/athletes/5206985 🟠 Shorts: https://www.youtube.com/@smartwatchshorts 🔵 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. ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ Support the channel by becoming a member🙏: https://www.youtube.com/channel/UChNWxrTlmh4IRSevon1X93g/join Subscribe: https://www.youtube.com/@TheQuantifiedScientist?sub_confirmation=1 Video edited by Alex: https://linktr.ee/allexb “Through the Magic of Buying Two of Them” → Check out “Technology Connections” on YT! 📸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 Timestamps: 00:00 Watch Basics and Testing Issues 04:04 Heart Rate Testing Part 1 13:16 Heart Rate Testing Part 2 20:13 Heart Rate Testing Part 3 20:50 Sleep Stage Testing 31:12 GPS Testing 25:36 Conclusions