Encumbrance

Encumbrance is how much your character is slowed down. There are many things that can contribute to encumbrance.

Injuries
Injuries will contribute to encumbrance. More serious injuries will slow you down more. Injury penalties will stack, and all types of injuries will slow you down.

Starvation
Having an empty hunger bar for more than one day will add 7% onto your encumbrance.

Inventory
By far the biggest contributor, the more you carry the slower you will move.

Clothing
More layers of clothing will slow you down.