Here is a case that I ran into in one of the professional basketball teams. Athletes train both in the morning and late afternoon and they must sleep between 1:00pm and 3:00pm during the weekdays except Friday because they have games on Friday at 2:00pm. What I wonder is that since the body and metabolism are accustomed to sleep between the above mentioned hours during the weekdays, how these sleeping routine effect game performance.
In short: does napping from 1pm-3pm on Monday to Thursday affects game performance on Friday at 2pm?
PS. These practice and sleeping hours are mandatory so they cannot be changed.