Heart rate tracking accuracy

[sunnyxbaby]

So I got my Fitbit for Christmas, and for the first 2 weeks it was great. It kept really good stats, and my heart rate was on point. For the past few weeks though, it's been really intermittently working. Most times it's like it gets stuck at like 122 and won't go any higher, even though my heart rate is really at 160 or so, which I've checked with my Samsung Health. I've tried syncing it, I've tried turning off the heart rate and resetting my Fitbit and turning heart rate back on, I've tried force stopping and restarting the app, and nothing has worked. Any ideas?

Moderator edit: Subject for clarity 

[RicardoFitbit]

Hi @sunnyxbaby, welcome to the Community Forums!

Thanks for your post and troubleshooting your device prior to posting too. First, let me share with you that we do not recommend our users to compare the data that's tracked with Fitbits and other tracking devices because they may use different algorithms to track data. 

Also, as with all heart-rate tracking technology, accuracy is affected by personal physiology, device location on your arm, and type of movement. For a more accurate heart-rate reading:

• Wear your Fitbit device on top of your wrist, and make sure the back of the device is in contact with your skin.
• When you’re not exercising, wear your device a finger’s width above your wrist bone.
• During a workout, experiment with wearing the device higher on your wrist (2 finger widths) for an improved fit. Many exercises such as bike riding or weight lifting cause you to bend your wrist frequently, which could interfere with the heart-rate signal if the watch is lower on your wrist. 
• Consider tightening your wristband before a workout and loosening it when you’re done. The wristband should be snug but not constricting (a tight wristband restricts blood flow, potentially affecting the heart-rate signal). 

Let me know if you have any additional questions.