I know many frum people wear tzitzis to bed, but a while ago a fellow told me that you should wear the tzitzis that you're going to wear the next day, because of an obligation to wear the same set for ...
Is a person allowed to sleep during the day of Rosh HaShanah? I have heard that you're not.
I wonder what Jewish law and thought say about taking weekday-afternoon naps. Are they encouraged? Allowed? Discouraged? Forbidden? Please cite sources.