Reading.

It's the best sleep aid, for me.

It's one of the reasons I don't get to read as much as I would like to. Because by the time I get to bed and mentally prepare to read for an hour, 4 pages in and I can barely keep my eyes open.

Also, there is no better sleep than getting up really early (the 5 am club) because by the time you go to bed you've been up for around 18/19 hours.

Unless you're a baby who goes to bed at 9 pm.