There's nothing better, in my opinion, than being a mom. The lack of sleep, time and everything else that comes with parenthood is well worth the reward of having a child. In honor of Mother's Day, a fascinating look at how being a mom changes our brains for the better.

To all the moms, godmothers, grandmothers, nanas, step-moms and mom's to be, Happy Mother's Day and thanks for all you do.