Saw someone drinking a whole beer from a funnel while being being held upside down. People do this and I basically die when drinking a sip of water while lying in bed.

Peristalsis

because the new metal straws have pierced the brains of anyone who did them.

I am confused by this, straws go in the mouth, if people are sticking them in their brains, they're doing it wrong, or are you saying there is a crack team of assasins out there who've vowed to keep this knowledge secret in a particularly gruesome manner?

Well, you did learn something.

It’s even cooler than that: The esophagus can squeeze things towards the stomach against gravity. You can drink water while hanging upside down. You’ll also get a nose full of water because your sinuses would be below your mouth… But once it’s in your throat and you’re swallowing, it’ll make it to your stomach just fine.

If you wanted to avoid the sinus problem, I guess you could just lay on your back on a steep incline. Not fully upside down, so your sinus cavity is still above your mouth. That way the water would hit the back of your throat where you could swallow it, instead of just draining straight into your sinuses.

Most of the non-English speaking world hasn't seen him as kids. I don't remember where I learned about peristalsis, but I grew up just fine.

Is this a writing prompt about being left behind on a dying earth because you'd starve on your voyage to Mars?

Baby bird style

There's a slight increase in the blood pressure in your upper body, and a small possibility of thrombosis, blood clots forming in your veins. But after 50+ years of space flight no one has had complications.

Veins are small so capillary action keeps things in order.

With no gravity though you'll have higher blood pressure to your head (and less to the legs)- it kinda makes astronauts faces a bit puffy. iirc this can slightly negatively affect vision long term.

Most of your body processes are in a small enough space that capillary action overtakes gravity.

If you put it on a sandwich, yes.

You can swallow things while dangling upside down. The esophagus is strong enough to work against gravity.

But liquids are a little bit more difficult, because they tend to flow in unexpected places in the mouth/sinuses/nose before trying to swallow.

Probably bee things

Try not eating as much sugar. I haven't had heartburn since I went zerocarb*, though I suggested from that pretty badly on my previous diet

*not actually zero carb, just really really low carb, zero fibre.