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Heart Rate Changes, Obvious Causes

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Heart Rate Changes, Obvious Causes

Many things can make the heart beat faster or slower than usual. Some common examples are:

  • Stress.
  • Pain.
  • Illness or fever.
  • Dehydration.
  • Exercise.
  • Panic attacks.
  • Stimulants, such as caffeine and nicotine.
  • Medicine side effects.

Current as of: May 1, 2026

Author: WebMD Ignite Staff

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This information does not replace the advice of a doctor. WebMD Ignite, disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. Learn how we develop our content.

NOTICE: This health information was not created by Columbia University Irving Medical Center and may not necessarily reflect specific CUIMC practices. For medical advice to your personal condition, please consult your doctor. Medical advice disclaimer.