Palpitations are usually harmless and are not an indication of any heart problems. Often they are a result of a sudden increase in a hormone your body releases when you are nervous, stressed or excited called adrenaline. Palpitations can be triggered by:

  • Anxiety, stress, fear or a panic attack
  • Use of recreational drugs
  • Caffeine or nicotine
  • Diet pills
  • Exercise
  • Fever

If you experience other symptoms along with palpitations such as dizziness, tightness in your chest or loss of consciousness you should seek medical attention.