The recommendation of 8 hours of sleep
Doing stuff in the daytime and going to bed at night
The regimen of 3 square meals a day
Conventional interior design, such as coffee tables belonging in the living room
The binary in all its incarnations
Standard breakfast items, eg. bagels, bacon, cereal, pancakes — it’s all fat, grease and sugar
Getting married and having kids
The workweek
Dairy
Looking before you leap
Avoiding conversation with strangers