how to slow heart rate quickly

To quickly slow down a fast heart rate, the most effective methods include practicing deep, slow breathing exercises, performing vagal maneuvers (such as coughing, bearing down as if having a bowel movement, or holding the breath), and splashing cold water or applying a cold pack to the face. These techniques stimulate the vagus nerve, helping to regulate and slow the heart rate almost immediately. Additionally, sitting down and focusing on calm, controlled breathing or meditating can help reduce heart rate caused by stress or anxiety. Staying hydrated by drinking water may also aid in lowering heart rate if dehydration is a factor. Avoiding stimulants like caffeine and alcohol can help prevent an elevated heart rate in the longer term.