Do astronauts faint after returning from space?

Okay, here's my attempt to edit that paragraph with a more personal and natural feel:

"So, do astronauts actually faint when they get back from space? You know, I've always wondered about that! I mean, think about it – they've been floating around up there, all comfy in zero-g, for months sometimes. Then bam! Suddenly they're back on Earth, gravity hits them like a ton of bricks.

I can totally imagine it being a shock to the system. Your body's gotten so used to not working against gravity that suddenly standing up... it must feel, well, impossible! Like all the blood's rushing to your feet. That dizzy, faint feeling? I bet it's intense. It probably feels like when you stand up way too fast after lying down for a long time, but, like, times a million!

And after all that excitement of rocketing into space, seeing the Earth from orbit... to come back and feel so weak and unsteady? It's got to be a bit of a downer, right? Makes you really appreciate how incredible our bodies are, doesn't it? How they can adapt to crazy environments like space, even if it takes them a little while to readjust when they're back home. I bet there is nothing like feeling your feet back on solid ground."