Conversation: The conversation between human and AI assistant.
[|Human|] hi just before i fall asleep or trying to falling asleep i feel like my heart is going to stop beating and i cant breath properly! Sometimes i actually fall asleep but wake up terrified cause i think my heart has stopped beating! Can this be anything serious??? Thank you in advance
[|AI|]  I read your question carefully, and I understand your concern. Judging from that description I would say that a heart issue is very unlikely. One doesn't actually understand if heart has stopped beating, if it did, there would be lack of blood flow to the brain which would cause lead to dizziness or fainting. I guess if one wanted to explore the issue to the end an EKG and perhaps a 24 hour Holder EKG (where you carry a device monitoring heart rhythm for 24 hours) may be done.However, I believe the symptoms are most likely due to anxiety, which can often manifest this way, so nothing serious. I hope to have been of help.