Because its a hard bone structure around the brain just in case your head gets hit it make sure your brain does not
Dietary supplement is your answer :) Hope this helps!
Explanatination: Usally its a bad idea because the way credit works is while it doesnt take money directly out of your bank account that money gets put on a tab basically and you will eventually have to of that tab and if you cant thats when you go into debt because you owe the bank that money.