I’ve heard it said that people who wake up at 4am are more productive.
No amount of productivity is worth this BS. I just feel bad for them. 
Discussion
My productivity severely declines if I don’t rest enough. That said, I am finding that going to bed earlier and getting up earlier has some big benefits for my productivity.
I have tried to be a 4am riser but just can’t. I’m good till like 6-7a (when I would normally wake up) then I just crash hard! Not worth it!!