Attributes

Your character has 3 basic attributes: Strength, IQ and mood. The maximum of each attribute can be raised by investing XP.

Strength
Strength is used up by activities like chopping wood or building. When scheduling an activity the game will tell you weather strength or IQ is used for that activity and will decrease at a rate of 1 per tick. The higher your current strength is, the more effective the activity will be. When starting a new character, your maximum strength is 70. Strength is regained by consuming food.

IQ
IQ is used by activities like researching or operating. When scheduling an activity the game will tell you weather strength or IQ is used for that activity and will decrease at a rate of 1 per tick. Current IQ has no effect on most IQ based activities. Exceptions to this rule will be stated by the game (for example discover). When starting a new character, your maximum IQ is 30. IQ is regained by reading magazines available from supermarkets.

Mood
Mood indicates, how tired your character is. Mood will decrease at a rate of 1 per hour. Low mood reduces effectiveness of most activities. When starting a new character, your maximum mood is 100. Mood is regained by sleeping.