Scientific study proves (and sometimes doesn't) thing we take as common sense. Recently there was a study that dogs understood us more than was previously thought. Which wasn't a shocker but you have a camp of folks saying dogs understand nothing and another camp that continuously speak to their dogs. The scientific study just adds empirical proof.

If we were to take everything religion brings to the table seriously we'd be in a big mess.

So is science.

Interesting, why isn't it as popular as Ramadan? I could barely find anything about it online.

It's not popular as Ramadan because it's not a must. Its called "ayaam albeed" which translates to "white days". It's called that because the moon is full on those three Days (13, 14 and 15th of each moon calendar month). The fast is from dawn to sunset and you are not allowed to drink water during that period.

[1] https://pearlsofamuslim.files.wordpress.com/2014/03/white-da...

Ramadan's fasting are compulsory while this and many others are not.