Which sentences in these excerpts reflect the idea that war affects not only the minds of the combatants but also their physical reactions?

1. "In a way, it seemed, he was part of the morning fog, or my own imagination, but there was also the reality of what was happening in my stomach."
2. "I tried to swallow whatever was rising from my stomach, which tasted like lemonade, something fruity and sour."
3. "In all kinds of combat the whole body is battered by emotion. The ductless glands pour their fluids into the system to make it able to stand up to the great demand on it."