Hey Sugahorse.

I am the exact same. I am on an anti-depressant though. But have had sleep issues since I was a kid. I am getting loads of sleep but still feeling really tired and yawning ALL the time and they are BIG yawns too not the wee normal ones. I was on sleeping tablets too but they did nothing for me btw- I was sleeping 2 hours a night and that was it. I am having the odd days when I only get 2-3 hours sleep a night but other nights where I am getting 8-13 hours and still feeling exhausted. When I am shattered and I go to bed early ie 9pm I am WIDE AWAKE till the wee hours of the morning. I am in a vicious circle. So I am doubtful I can help you!!! Sorry. Hope you find out the cause of your lack of restfulness