Matthew Walker, the author of Why We Sleep, was on the Joe Rogan Experience recently.
I've been in material cognitive decline over the past year or so and I'm nearly certain it's due to my abhorrent sleep patterns. This episode really helped me prioritize a fix over other things that would normally result in a night of 3-5 hrs in bed or on the floor (who knows how much actual sleep).
It's a great episode: https://www.youtube.com/watch?v=pwaWilO_Pig