hi i have a strange question , once in a while (few time a year) i suddenly have a wierd feeling that i cant explain. 1. my hearing become stronger , everything is very loud , and very annoying 2. my heart bit become stronger 3. i have a general feeling of being very annoyed and very uncomfortable this sensation happens with no explanation , sometime after watching tv , playing on the phone , long meeting at work , or just without any explanation. usually it past after 1-30 minutes any idea what is it? im 25 year old male , healthy , and have no medical problems .