It wasn’t meant to be an attack 🙂. Absolutely, those people should wear proper PPE (bright clothing) when running in the dark. But you have an elevated heart rate because your body is telling you you are in a dangerous situation. And it’s right. Too many drivers (not an accusation at you) either ignore those signals (and mentally normalize driving recklessly) or blindly focus on removing the triggers for those signals at the expense of the safety of themselves and others (by buying larger vehicles or by voting for politicians that make our infrastructure even more hostile to pedestrians than it already is). At the end of the day, driving a car is dangerous. Especially on residential streets where pedestrian interactions are possible or even common). And that won’t change as long as it is a residential street. Being aware of the danger is a positive, if inconvenient, reminder to drive cautiously.