I swear I can hear my newborn cry even when I'm in the shower with the water running and he is in a completely different room. It sounds impossible but it happens every time. Pregnancy hormones rewire your brain to be hypersensitive to your baby's cry. Brain imaging confirms it. A mother's brain responds to her own baby's cry like no other sound. But what I find really interesting is that fathers can actually build this same capacity. Mothers come in hormonally primed from nine months of pregnancy. Fathers develop it through hands on caregiving. Studies show that the more time a father spends with the baby, the more their brain physically adapts. Fathers who are primary caregivers develop brain patterns that look similar to mothers. This is why you may notice your husband becoming more attuned as time goes on, or even more so with the second/third child.