Keyword Stuffing – How much is too much?

I keep reading that we should write in a natural way and I get that.

But at some point there must be a percentage which is considered unacceptable. I've read 2.5% before and I've kept that in mind.

But some tools seem to consider 5%, if I'm not mistaken. I guess we should go for the lowest percent to be on the safe side?

Can we recover for penalties easily or it's almost impossible? Imagine you use a keyword too much and Google penalizes you. How long can it take to recover after you fix…

Keyword Stuffing – How much is too much?