Agile (3.5e Trait)
From D&D Wiki
You are quicker on your feat than most people. But you lack the strength of body others possess.
Benefit: You gain a +1 bonus on Reflex saves
Drawback: You take a -1 penalty on Fortitude saves
Roleplaying Ideas: A character with this trait might be wary of taking an approach to a situation that would put himself in harms way. Preferring to move quickly and avoid danger.