Decay

Your Strength and Knowledge skills, and your country's buildings, will automatically decay over time.

Strength
Up to 7 points lost per day. You will only lose strength if it is 20 or higher.

Knowledge
Up to 7 points lost per day. You will only lose knowledge if it is 20 or higher.

Country buildings
Up to 5 percentage points lost per day. They will only decay if 10% complete or higher.