Imagine ftl space travel that requires modifications to the human body enabling them to survive in space without a spacesuit, possibly even truly skyclad. What mechanism for ftl travel might require this? Why can't a spaceship be used? Or a spacesuit? Or possibly even clothes, and if that extreme, what can be brought along?
I do not require, but might prefer, that the mechanism be carried on the person's.... person; if an external mechanism giving the person a push (i.e. fixed portal or beam or flying alongside a ship, etc.) is interesting enough, that might be sufficient; but in general, it would be nice to give the person at least some ability/freedom to maneuver themselves.
I am also willing to allow that there might be some other ftl mechanism in existence, allowing for interstellar trade and spaceships at the origin and destination to overcome atmospheric exit and reentry, if the personal mechanism cannot overcome these issues; but if there is another ftl mechanism, why is this one preferred? What other relevant questions need to be answered?
Just for clarity's sake, I am not asking What modifications would be needed to allow humans to survive in space with limited protective gear; I am asking what might cause an ftl mechanism to require such modifications. Handwavium will work fine for the how of flying skyclad; I'm looking for a good reason for why they have to do so.