Arknights Endfield introduces many systems that feel familiar yet deeper than before, and Sanity is one of the most important among them. Sanity is a resource that limits how many activities you can perform in Arknights Endfield. Sanity Restoring Items And RewardsSanity restoring items play a major role in Endfield. Best Ways To Use Sanity EfficientlyUsing Sanity well matters more than having a lot of it. Finally, avoid panic spending Sanity items just to keep playing.