Our mutant bodies are able to quickly regenerate any form of non-lethal injury, so we can be smooth and ready for more adventure again, but it won't happen overnight. The healing might take anywhere from 0.5 to 1.5 times as many days as the amount of HPs an injured warrior was missing. So be a good sis and don't forget to heal as much as you can before ending a mission, since early treatment can greatly reduce the duration of the painful recovery process.