Don't mean to be complaining....again....

....but, Is there a real reason why things always hurt worse, and tingle more, and basically most sx seem SO much worse at night. It seems that anymore, I can't get rest because I'm up and down, in and out of bed until the wee hours of the morning?????
Do I just have my days and nights backwards like a baby, or is there a real physical reason for this?????
Thanks!