emdx

Shouldn't a cheaper surface-to-orbit system be the highest priority?

A former colleague's brother-in-law went up twice (and did several EVAs).

He says that it's nearly impossible to sleep thanks to vestibular input being totally garbled. I suppose that he wasn't there long enough to adapt.

Did you have any problem sleeping at all? Or did you need some adaptation period?

Speaking of vestibular input, are there some precautions you should take, things like trying to avoid sudden head movements or something like that?