Fair after Double Jump?

[SpikeyMike]

I've noticed a lot of Sheiks (M2K, Shroomed, DruggedFox) using fair after they double jump. Specifically when they are recovering. I was wondering what the benefit of this was and if I should implement it into my game. I could see why fair after double jump could be a good idea to trade if someone's trying to read your DJ but I've seen players do this when they are nowhere near their opponent. Does it give any kind of momentum boost? Or is it simply muscle memory and they always fair after their DJ due to habit?

 

[Nishifue]

aaaaaaaaaa

 

[ECHOnce]

There's also a popular idea that's been around forever, about how using a Fair straight after gives your double jump a tidbit more forwards momentum. IIRC someone disproved this in debug though; I'd provide a source but can't remember where I read/watched it.

 

[Poccoishere]

It increases your grab box so slightly that it really doesn't matter.