Levels of a stress hormone seem to rise about an hour before a sleeper anticipates waking up.
A week before, on the overnight sleeper train from Bombay to Ahmedabad, I'd spent an hour talking with a 12-year-old Jain boy about the sport I knew nothing about.
Like those before them, the sleeper spies who were deported to Russia last week in one of the biggest espionage exchanges in decades will probably miss the United States, picket fences and all.
"Do you think I'm stupid?" asks Luna (Diane Keaton) in Sleeper, before transforming herself with books of Marxist theory into a khaki-clad revolutionary; "she's read a few books and suddenly she's an intellectual," complains Allen's Miles.
Iranian tour operator Uppersia offers 15-day trips from £897 After boarding the train in Ankara, passengers travel to Tehran to explore the archeological sites, before taking a sleeper to Isfahan for its iconic covered bridges and huge Naqhsh-e Jahan Square. Naqhsh-e Jahan Square
It's like the favourite Tory pastime of burning a £50 note in front of a homeless person, but drastically magnified: drag out a cart full of all your worldly possessions onto the street before some rough sleeper, set the whole thing on fire, slit your eyeballs with a razor – fuck you, I will destroy everything I have so long as none of it goes to you.
Master the gravity throw before trying a sleeper.
Only last year, the toe of Africa had but a few short months to bask in the global interest stirred by scrappy sci-fi sleeper District 9 before said interest was swiftly eradicated by Clint Eastwood's Invictus, the "coach Nelson Mandela story" so prodigiously dull even the Oscars turned it down.
Architectural buffs and other appreciators should latch on to this sleeper show before it goes away.
6. Be a sober sleeper Alcohol before bed disrupts sleep, and nothing kills a lie-in like waking with a mouth like a barman's cloth.
