Sit or lie down and rest
Slow your breathing
Inhale through your nose for 4 seconds
Exhale slowly for 6 to 8 seconds
Repeat for several minutes
Loosen tight clothing
Sip cool water slowly
Move to a cool, quiet place
Avoid caffeine, nicotine, alcohol, and stimulants
Try gentle vagal maneuvers only if you know they are safe for you
Put a cool cloth on your face or neck
Stop any physical activity immediately
Focus on relaxing your shoulders and jaw
Check your pulse again after a few minutes
Seek emergency help if you have chest pain, fainting, severe shortness of breath, or a very fast heart rate that does not improve