The best way to determine if someone is having a stoke is to think F.A.S.T.
1. Face: Does the face look uneven? Ask the person to smile.
2. Arms: Does one arm drift down? Ask the person to raise both arms.
3. Speech: Does their speech sound strange? Ask the person to repeat a simple phrase.
4. Time: If you observe any of these signs, it is time to call for emergency medical help.