A brain stroke is a traffic jam in the pipes that feed the brain. When a clot blocks a pipe or a pipe bursts, brain cells start to choke within minutes. The body flashes a short, clear list of warning signs that anyone can spot. The first sign is sudden face droop. One side of the mouth or eyelid sags like wax melting. Ask the person to smile; the grin comes up crooked or does not come up at all. Arm drift is next. Hold both arms out and count to ten. One arm sinks, turns inward, or feels numb.... Learn more