I started listening to some history podcasts in bed with my eyes closed. The podcast app I use (podcast addict) has a timer feature so I set it to 15 or 20 minutes and by the time the podcast stops I'm ready to sleep. I also know a lot more history than I used to :)

I recommend:

The History of Rome by Mike Duncan

Revolutions (also by Mike)

The History of Philosophy without any Gaps

The British History Podcast