There鈥檚 a lot to be said about the perks of fitness trackers. Not only can they help you stay on top of your fitness goals, but they might even be able to save your life聽and聽assist you in聽creating your very own supplements. Not to mention the fact that they can聽pull double duty as a totally sleek and stylish fashion accessory!聽But with soooo many trackers on the market, how do you choose? According to a new study carried out by Cleveland Clinic, there IS one that trumps the rest, at least in terms of accuracy.

fitness-wearable-woman-running

In a study titled 鈥Accuracy of Wrist-Worn Heart Rate Monitors,鈥澛爎esearchers at the clinic set out to 鈥渁ssess the accuracy of four popular wrist-worn HR monitors under conditions of varying physical exertion,鈥 using the Fitbit Charge HR, Apple Watch, Mio Alpha and Basis Peak. Using these trackers as well as a chest strap, the research team took 50 healthy adults and asked them to rest, walk and run on a treadmill聽while hooked up to an electrocardiogram (EKG) machine, which measured their heart rate.

The EKG results, which show the absolute most accuracy聽when it comes to monitoring heart activity, where then compared to the information the wearables gathered. Perhaps not surprisingly, the chest strap, which is worn closest to the heart, had a 99% accuracy rate.聽Unfortunately, when it came to the Fitbit Charge HR, Mio Alpha and Basis Peak, the accuracy 鈥渄ropped off into the low 80s,鈥 revealed Dr. Gordon Blackburn, one of the study鈥檚 authors, in an interview with Time. Not terrible, per se, but far from perfect.

SAN FRANCISCO, CA - MARCH 9: The new Apple Watch is seen on display after an Apple special event at the Yerba Buena Center for the Arts on March 9, 2015 in San Francisco, California. Apple Inc. announced the new MacBook as well as more details on the much anticipated Apple Watch, the tech giant's entry into the rapidly growing wearable technology segment as well (Photo by Stephen Lam/Getty Images)

So which wearable came out on top? The Apple Watch, which聽turned out to be about 90% accurate. Nice! Before you run straight to the Apple store, however, Dr. Blackburn revealed that there is聽a catch:聽Accuracy is聽very much dependent on the intensity of your聽workout.

鈥淎s the activity intensity went up, we saw more and more variability鈥 some of the wrist technology was not accurate at all,鈥 Dr. Blackburn revealed. The reason? 鈥淎ll of the wrist technologies are looking at blood flow. You need to have good contact between the photosensing cells; as a person is exercising more vigorously, there鈥檚 more bounce, so you may lose some of that contact.鈥澛燗ha!

That being said, there鈥檚 no problem with using these uberconvenient tools聽to track your heart rate and fitness results, just remember that your tracker isn鈥檛 meant to be a medical device with medical-grade results OR replace them: Talking to your doctor before settling on a daily workout routine is always a good call!

Do you have a go-to fitness tracker? Tweet us @BritandCo.

(h/t Pop Sugar, photos via聽Stephen Lam/Getty)聽