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Not sure if this has been mentioned, but I just discovered that my X2 has a great new use. I’ve had the X2 for a year and a half and I’m loving it–I have exercise-induced Left Bundle Branch Block and my X2 has been invaluable in showing me (on the ECG) exactly when I get LBBB, which allows me modify my training and medication schedule effectively (I’m a 62 year old competitive speedskater, and yes, I have a cardiologist). I’ve been using my Garmin watch for measuring overnight Heart Rate Variability to watch for overreaching in my training, but AI suggested that using my X2 for 2 minutes in the morning right after waking up is a much more accurate measurement of HRV (wrist sensors are notoriously inaccurate in measuring HR). I’ve been doing this for a few weeks now, and it gives me a great “finger on the pulse” (pun intended) of how my recovery from workouts is going and whether I need an additional day off. X2 is such a great tool!
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Hey… I dont understand how you do the 2min test AI suggested. THX.
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![Profile picture of Community Manager]()
Thank you for reaching out to us through Community
With Frontier X2, we offer a premium subscription that unlocks advanced insights such as the readiness score, VO₂ max, metabolic profile analysis, sleep stage data, and more. The readiness score analyzes your sleep stages and heart rate to provide an overall score that indicates how ready your body is for the next day’s activities. For more detailed information, you can check out this link: https://fourthfrontier.com/pages/readiness-score Let us know if you have any other questions—we’re happy to help.
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Thank you so much for sharing this with us. We’re really glad to hear how valuable the X2 has been for you and how effectively you’re using it to manage your training and recovery. It’s great to know it’s making a meaningful difference for you.
We truly appreciate your kind words and continued trust in Frontier X.