She runs on no sleep — just like the rest of us.
Another thing you quickly realize you took for granted after entering motherhood? Sleep! And apparently, Kristen is right there with the rest of us when it comes to not getting enough shut-eye. "I think that fuels everything. It fuels my lack of patience with my kids sometimes. If I had had a full night's rest, I would be able to be more patient with them sometimes." Preach sister.