I've noticed that too and I make it a point to stop programming or doing anything that requires stimulating brain activity for at least an hour before going to

I've noticed that too and I make it a point to stop programming or doing anything that requires stimulating brain activity for at least an hour before going to bed. Try watching a good show that doesn't require too much attention an hour or two before your bedtime. Putting your brain into a passive mode helps a lot. (Do not watch Game of Thrones or any complex/stimulating show or it probably won't help!)