The Fitbit Community is a gathering place for real people who wish to exchange ideas, solutions, tips, techniques, and insight about the Fitbit products and services they love. By joining our Community, you agree to uphold these guidelines, so please take a moment to look them over.
I think the red sensor helps calculate the resting heart rate. Or at least I read that on these forums somewhere. I know that mine is red if I look for it when I wake up in the middle of the night and green during the day. And both flash when I'm waking up.
I think the red sensor helps calculate the resting heart rate. Or at least I read that on these forums somewhere. I know that mine is red if I look for it when I wake up in the middle of the night and green during the day. And both flash when I'm waking up.
Best Answer
