Do you find it difficult to sleep when you're travelling, e.g. in buses or planes? What do you do if you can't get to sleep?

Do you snore? Have you ever had to share a room with someone who snores? Was this a problem?

Have you ever flown long haul? Where to? Did you get jet lag? How long did it take you to get used to the different time zone?

Do you ever have a nap after lunch or at any other time during the day? How long do you sleep for? How do you feel when you wake up?

Have you ever fallen asleep at an embarrassing moment, e.g. during a class or in a meeting?

Do you watch TV in bed on a tablet or other device? Do you ever fall asleep while you're watching a programme?

Are you a light sleeper, or do you usually sleep like a log? Do you use something to help you wake up in the morning?

Did you use to have a bedtime routine when you were a child? Would someone read to you in bed? Did you have a favourite story?

Do you often have nightmares or recurring dreams? Do you ever remember what your dreams were about? Do you ever try to interpret your dreams?

Have you ever stayed up all night to revise for an exam the next day? How well did you do in the exam?

Have you ever overslept and missed something important? What was it?