I don't know...I'm asleep.
Hope this helps lol
Seriously, given some of the things said, have you considered not physical elements but mental?
I sleep like shit, never have a full night through, but get about 7 hours in pieces because I struggle to switch off and there are plenty of times I wake having remembering vivid dreams - running etc - and wake with my legs feeling like I've done a marathon.
Finding a balance between physical tiredness and mental tiredness - if you can switch off and then use sleep for what it is, ie an abrigation of the days activities for long term memory, is the start. But it's not always the answer if you can't switch off, but if you can't, the key to that isn't sleep, it's how you approach sleep and the routine.
And I still haven't got it right either.
Col, sounds like, knowing you have a day of shit ahead might be your trigger here dude. Easier said than done I more than get, but you looking for a job you enjoy?
And Kef - I don't. Who needs a TV in the bedroom???
As ever Skeg, and Kef, on that score though, hope that is something that improves quickly as I do Col's problems.