Stratford, of course, is only just a day trip from Portsmouth, so the early hours return to the city reminded TOTD of Professor Russell Foster and his work on body rhythms and cycles.
Probably best to start with his book:
Rhythms of life : the biological clocks that control the daily lives of every living thing. London: Profile, 2004- which you can find on the Ground Floor of the Library at: 574.191/FOS
But if we’re not local you could also try:
Weekend lie-in fails to make up for long hours in the week:
Teenagers aren’t lazy… they’re simply saving their energy for later in the day
and perhaps most worryingly:
The Time of Your Life