I feel the same way about my Garmin watch's sleep tracking, but one thing I haven't been able to do is use that data effectively. It's an accurate after the fact representation of my sleep, but it doesn't tell me anything that my own body isn't telling me in terms of how I should adjust my sleep patterns/habits.

Do you find you change your behavior at all based on the sleep tracking?

Yeah, I found its made me much more aware of and focused on eating early, getting to sleep early, staying on a consistent sleep schedule, etc.