No: Caffeine has a half life of 3 to 7 hours. That means it's down to 25% of the original amount in 6 to 14 hours. But caffeine is only 1 factor in heart skipping and the majority of people have no reason at all. Electrolye imbalance, lack of sleep. Stress, nicotine, medicines, xs thyroid hormone, menstual cycle, pregnancy, and heart disease are other potential factors.
Answered 6/13/2013
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