01-27-2016 11:20
01-27-2016 11:20
01-27-2016 13:12
01-27-2016 13:12
Yes, you are!
When operating in one of the exercise modes, the bottom line of text (under the timer display) allows you to swipe left and right through a whole set of things. Heart rate is one of those.
Mike | London, UK
Blaze, Surge, Charge 2, Charge, Flex 2 - iPad Air 2, Nokia Lumia 925 (Deceased), iPhone 6
Take a look at the Fitbit help site for further assistance and information.