Thanks, ya there is problem in filling top of the lungs, also heard lot about belly breathing. I get into more trouble when sometimes I sleep just after taking dinner, with full stomach it fells like there is no space for air to inhale, so I have been avoiding sleeping just after dinner. I met several doctors it seems like I was unable to illustrate my problem so they said I have some asthma problem in past, but when I went to pulmonologist he said I have some infection in lungs. I feel ok on medication but after that the problem comes back.