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’ve had this problem before, too. As I looked into it I realized I was getting less that 3 hours of sleep. You may get a less detailed sleep graph if that occurs. You may want to look into that.