In case of my wife, she does not face any such issue. She takes care of taking early dinner in the night so as to enjoy sound sleep in the night for at least for eight hours.
small drops make a mighty ocean
I think I need at least six hours of sound sleep to have complete rest for my mind and body. Generally, I sleep late at night when all my family members have already slept. Sometimes, I sleep a bit earlier, if I get up at midnight, I leave my bed and make tea then spend some time with my mobile. But I don't want to be disturbed then I continue sleeping.
Sometimes., when I visit ISC I see a few users still online.