Many reasons: A forgotten nightmare and an episode of supraventricular tachycardia are the two best bets. If it takes your breath away or is accompanied by pain, or if you feel otherwise unwell, let your physician know.
Answered 9/28/2016
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A doctor has provided 1 answer
3 doctors weighed in across 2 answers
A doctor has provided 1 answer
6 doctors weighed in across 2 answers
3 doctors weighed in across 2 answers
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