I've been under alot of stress lately...during my sleep I was woken up...with the most scariest rapid racing heart...what I can only describe as erratic..I was red hot...couldn't get my breath felt confused when I woke up as I had been in a deep sleep. Feeling faint very weak and sick and started to shake as if I was having a fit...but I lay there scared until it eventually slowed down. When waking up in the morning I felt very drained. A couple of years ago I was tested to see if my heart was ok as I do get palpations..but I'm not on any medication. I do have rheumatoid arthritis but no other health issues. I don't smoke. My diet is ok. I had no chest pain...but I must say I was very scared...just wondering if anyone else has experienced this...thanks again....