A new study says that three kids is the most stressful amount to have. Mothers with three kids stress out more than moms with one or two kids but also stress out more than moms with four or more.

It doesn't say exactly why but for some reason three really seems to be the tipping point.

Why it doesn't get more stressful as you add more kids is hart to say.  Apparently, having four or even five kids doesn't seem to increase the amount of stress.