45+ old male sleep maintenance issues for couple of years resolved by fixing the basics- blacked out room, avoiding alcohol and coffee having the biggest effect. Still even if I am able to sleep 8 hours the sleep is not as restorative as I would expect. Recently I have noted that 500mg paracetamol (tylenol, acetaminophen ) result in truly excellent restorative sleep. My question is: what could be the mechanism involved? What hormones are affected by paracetamol that have relevance to sleep? I would like to modify my diet/lifestyle further to get this type of sleep without the drug. Normal weight, fighting mild gastrointestinal and dermatological issues that indicate autoimmunity and allergies, on paleo diet since 6 years if that is in any way relevant. I have no pain the drug would help me with.