I wear my Fitbit 24/7 and use it only for sleep and for exercise. I don't track food or anything else I personally try to exercise 6 days a week, taking one day off to rest. And try to get at least 30 minutes of cardio each day. I do this with either a brisk power walk or slow jog for 30-40 minutes. My best friend, who is a doctor told me after I got diagnosed with lung disease that I had to do cardio everyday and keep my lungs in shape so I've been exercising regularly for the past three years with my fitbit. I've never gotten about an 85 on sleep and my low has been around 63. Love my Fitbit! Nan