Fatigue from Running

If you sprint over multiple consecutive Combat Turns or during multiple Action Phases in the same Combat Turn, you risk taking fatigue damage. For every consecutive Action Phase or Combat Turn in which you use the Sprint action, you take a cumulative 1S DV of fatigue damage, which means that the second time you take it without dialing it back you take 2S, then 3S, etc.

If you’re only running (using your running movement rate) instead of sprinting, this damage is taken every 3 minutes.