I have a sleep disorder for the past 7-8 years. I have consulted different doctors but can't find a solution for this.My problem is that when I fall asleep, after some time may be after 6 hours my heart beat starts racing and I can't breathe properly. After that it becomes difficult for me to fall asleep and I don't get the satisfaction of a good sleep even though if I a have slept for 9 hours. This problem only happens in a specific place. I live in Mumbai, India and I a face this problem daily but when I go to other city I don't have this issue. Please give a solution for this.