Just a silly question of Curiosity.
Heaps of characters push a whole range of stuff out of their bodies with internal energy in these novel and movies (i.e. from solids (arrows, knives, swords, projectiles) to liquids like (poison, wine, blood, ??? sperm ), but how can they control what they push out?
Like XF can push out 4 daggers form his chest, but does he also push other stuff out at the same time? Can someone push poison out of their system without getting a haemorrhage?