heart rate changing when landing

[Tadeu]

Hello there. 

I'm flight attendand and  I use my Blaze during my flights when I realize that every takeoff and landing the heart rate increases until the limits and after some minutes returns to normal rates.

I must to face it like what? Malfunction, the atmospheric pressure has to do with the heart rate measure or I should run for my doctor?

Tks!

Moderator edit: Updated subject for clarity 

[SilviaFitbit]

It's great to have you here @Tadeu! There are some things that can impact your heart rate reading, such as, movement, temperature, humidity, stress level, physical body position, caffeine intake, and medication use are just a few things that can affect your heart rate. Different medical conditions and medications can impact your heart rate as well.

I recommend you to keep tracking of your heart rate reading during the day, maybe when you're at home and not while landing. 

Keep me posted.