Jo Baker

"If you can get out before 11am-ish then there's a part of the brain, just behind the eyes, that responds to light."

"Your brain learns this is somewhere I lie and get stressed about not being able to sleep - so the most important thing is a consistent waking time."

"When you fall asleep [after large amounts of alcohol], you're anaesthetised really. It's like having an anaesthetic. You're not asleep."