I have had one good night's sleep since we left 28 August. I have never, ever had such a problem adjusting. Normally I travel, put my head on the pillow, go to sleep, and then wake up. Same thing going either direction.
I have tried squaring numbers. Maybe I had known and forgotten but I realized the sum of consecutive numbers is the same as the difference of consecutive squares. Eight squared is 64. Nine squared is 81. 81-64=8+9
I have gone through all the U.S. states and their capitals. Named all the Canadian provinces and territories. Tried to figure out how many states have a capital that is also the largest city. I have not had any coffee.
I tried to remember the details from my parents' house to the pool where I swam in the summer.
Now I am awake and staying awake. I will get in the pool before going to bed to cool off a bit. I will sleep again one day.