Look at the time stamps on the pictures. They are all within a few hours of each other. It counts me as sleeping when I am not. I actually got about 7 1/2 hours of sleep that night. Why does it vary so much? I love the options available in the app, but they don't appear accurate. How can I trust the rest of the data (HR, swimming, steps, etc)? I only have a few days left to take this one back under the 14 day return policy. So sad. I really liked what Garmin had to offer. Any suggestions before I return it?