A few years back, I picked up a Zeo to help answer why I didn't feel rested in the morning. If you had told me the deceptively simple answer before I purchased the Zeo, I would have dismissively laughed at you. Today, the Zeo collects dust and I'm in bed before 10:30p.
Full write up here: https://garrickvanburen.com/archive/how-i-learned-to-get-up-...