Sit or lie down and rest
Take slow, deep breaths
Sip water
Avoid caffeine
Avoid nicotine
Avoid alcohol
Cool down if overheated
Loosen tight clothing
Try gentle vagal maneuvers only if previously advised by a clinician
Manage stress and anxiety
Get regular sleep
Exercise regularly
Limit stimulants and energy drinks
Eat balanced meals
Check for fever or dehydration
Review medications that may raise heart rate
Seek urgent medical care if chest pain, fainting, severe shortness of breath, or a very fast or irregular heartbeat occurs