I promise you will learn things about your body from this device.
Ill give you some examples from my two years of using it. There is this feature called journal and after you wake every day you complete your journal. Its just a system for you to record heaps of info/metrics that you get to select and track data on. For example, i know that if i have more then 2 coffees a day or a coffee after 2:30 pm it affects my sleep quality by about 20%. Another one, if i have sex before sleeping it improves my sleep quality by around 8%. Thats just two items in my journal, every week/month/year it gives me updates on these metrics and how they effect my sleep, recovery, stress etc.