Another one in the "no sleep" club here, I see so much in this thread that I relate to and it's not doing me any good. Since I'm technically an ecommerce manager but increasingly a graphic designer plus the sorry state of the cycle department frustrated me so that is now my domain and we now have a decent entry level range, a good women's range and increasing e-bikes and accessories - but with no-one except me to run it and do the assembly, servicing, buying, stock replen, add to the website etc..
Which means I get to work at 9, finish work between 7 and 10, eat a takeaway or a pot noodle, feel cheated if I were to go to bed at 10/11 with no "me time" - couldn't sleep anyway with things going round my head, so then end up getting a "second wind" and going to bed at 1. Oh and working 7 days, with only 2 days off so far this year.
And I'm breaking, with only a 12 mile round trip....
I'm good at telling other people not to do things though, and not so good at getting out of the habit myself.
I definitely think that there is an "over-tired" which becomes a self perpetuating cycle because at 22:10 tonight as I type this, there is no way my brain will shut off and allow me to sleep for at least another couple of hours