- The fact that women just walk around
and they're like human making factories,
that's crazy.
(upbeat music)
- [Voiceover] A woman's uterus can expand
about 500 times in size during a pregnancy.
- Not even five times, not 50 times,
500 times its normal size.
- Wow, uh, that's a lot.
- What happens to all the innards?
- I feel like a uterus 500 times its normal size
is the size of me.
- This is my uterus.
Is that how big a normal woman's uterus is?
- [Voiceover] In addition to her uterus,
a woman's feet and heart could increase in size
during pregnancy.
- I thought here feet increased in size
just cause like, you know, swelling.
- I would imagine that the feet have to be bigger
so that you can balance while you're carrying
a person inside of you.
- The feet made me just think,
yeah cool, feet grow, but your heart grows?
- Is that a good thing?
Yeah, your heart can pump more blood
so they should be better at exercise.
- There's just too much love
and blood flow.
- [Voiceover] From the second trimester onwards,
babies pee in the uterus, then they drink it,
then they pee again,
then they drink it.
- ♫ The circle of life ♫
- That reads like a horror movie script.
- Are you giving birth to Bear Grylls?
- I think babies even after they're out of the uterus,
they still drink their own pee.
- We have pee brains.
- And here we go, the miracle of life.
- [Voiceover] We've got some body producing hormones,
otherwise known as fairy dust apparently.
- Something just exploded in her butt.
- [Voiceover] The bladder is just getting crushed right now.
- [Voiceover] That's a baby growing.
- [Voiceover] Oh, it's lower than I thought.
Like where do the intestines go?
- You'd think the woman's stomach
could not possibly expand anymore, but then it does.
- It's really scary.
I don't want any of my organs to move at all.
- [Voiceover] Oop, there goes.
- That's what it looks like when Neo
gets plugged out of the Matrix.
- How do babies fit through women's pelvises?
- Yeah, this just seem unpleasant.
- [Voiceover] They sure this is a face?
- This looks like a bad elementary school pottery project.
- [Voiceover] Is that an eye socket?
Is that a nose?
It's a nose, right?
No, I don't know.
- The forehead is becoming the nose.
- [Voiceover] It looks like a weird ass Pokemon
and it turns into a pig and now it looks like E.T.
- Ohhhhhh, a baby.
- It is beautiful.
It's strange to look at.
- I don't envy this at all.
- I feel like you have to say,
"I'm really sorry I want to have a baby."
- We get so amazed by like our iPhones
and by all these other like trivial technological advances,
but like the most advanced thing in the world
are our bodies.
- Some crazy shit's gonna go down
when my wife and I have a baby.
- [Voiceover] Why isn't maternity leave better
in the United States?
That's my question.
- It's just so sad what's happening over there.
- Oh yeah, um-hmm.
You don't know the half of it.
- This is what just happened to that baby.
(whining)