I don't sleep all night, at the least I wake and have a sip of water I now keep next to my bed. I usually wake at least twice a night, often need to go to the bathroom. If I am lucky I may get 4 to 6 hours once in a blue moon. Usually I wake every 2 hours, don't remember when I didn't, most likely before my 2nd and 3rd sons; over 30 years ago.
Napping? if it is early enough I may try to take 20 minutes, if it is to late then I am up either all night or wake like 2 or 3am; so I try not to nap.