Anyone here into the bullet proof coffee thing?

I've tried it a handful of times. It's tasty and frothy but I don't know if I'm sold on all of the alleged health benefits and claims of increased mental focus.

For those that are unfamiliar essentially it's just coffee that you throw in a blender with some sort of fat base like unsalted butter, coconut oil, or MCT oil.

I've tried a few different combinations and the taste difference is almost negligible depending on whether you use oil or butter IMO.