If you're stung by a Scorpion that has a type of venom that is a kind of neurotoxin, at any movement, it propagates in your body through your blood. If you decide to stop moving at all, you won't propagate the neurotoxin and it stays as it is, doing little damage to your body. If you try to move (=play cards) and struggle against death, going toward an hospital or calling an ambulance and stuff (=try to win the game) the Neurotoxin will propagate more, but, if you're fast enough and the ambulance/hospital good enough (=good cards played without activating more than necessary) you could succeed to exterminate the poison inside of you (=win).