I understand that 5e has abilities and spells which require you to use the different ability saves but under which mundane (assuming no magic or monster abilities) circumstances would you use either Intelligence or Charisma as saving throws?
I can picture using the others: Constitution against fatigue, Dexterity to avoid obstacles, etc but not for Intelligence or Charisma.
Best Answer
I find examples are the most effective answer for things like this.
A mundane intelligence saving throw
A mundane charisma saving throw