![]() The Up3 could gain extra features down the road, but when will they arrive? Who knows. The more affordable Up2 band's simpler but perfectly effective sleep tracking is perfectly fine. The Up app does a great job of encouraging proper sleep and calculating proper bedtimes based on your daily living habits, even setting vibrating bedtime alarms, but I don't think the extra dimension of REM sleep made any difference. But as I looked at my sleep charts on the Up app, again, it was hard to draw any conclusions.other than I wasn't getting enough sleep in general. Band-based sleep analysis is no replacement for a real medical-grade sleep study, but this is meant to help you understand how generally well-rested you've been: deep sleep equates to body rest, and REM to brain rest. Much like other heart rate-enhanced sleep tracker bands like the Microsoft Band, Basis Peak and Fitbit Charge HR, it measures "light" and "deep" sleep, plus it has an added "REM" sleep mode. The Up3 also uses heart rate monitoring to improve sleep tracking, and it seems to have a slight impact. Jawbone's app hasn't told me anything about what this means, or what I need to do next with that data. I see my resting heart rate is 57 one day, 60 another, 58 the next. Low resting heart rate is considered to be a good thing, but how low? There's no real goal to this game, unlike the 10,000-step metric for pedometer-based fitness bands. Sleep analysis includes resting heart rate readings, and enhanced measurement of REM sleep. Heart rate depends on what you're doing, and other factors in the your general health. Heart rate is a weird thing it can run high or low, and that doesn't necessarily indicate anything about your health. ![]() Jawbone has suggested that this simplified resting heart rate number is meant to help people understand heart rate and start with a digestible piece of data. What do I do with that number? Good question. That averaged number appears in a small heart-shaped icon on the Jawbone Up app's home screen, and that's it. It only measures resting heart rate right now, overnight, as you're sleeping. So: the Jawbone Up3 cannot currently be used an active heart rate monitor. But at least the Basis Peak does real-time heart rate tracking for exercise and daily use, and it even has a screen. Some of these features are ones that the Basis Peak also claimed to be able to measure, but never seemed to in a meaningful way. But, right now, all they're being used for is sleep tracking and resting heart rate. (Older BodyMedia bands used similar technology Jawbone purchased BodyMedia several years ago.)ĭown the road, Jawbone says, these sensors could also be used to measure skin temperature variations, hydration, even stress levels. ![]() The Up3 measures heart rate using a completely different technology than most current wristbands: instead of a green LED, it uses metal studs to measure bioimpedance. Up3's strange use (or nonuse) of heart rate The Jawbone Up app shows your daily resting heart rate, and that's about it. ![]()
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