I have fainted twice and when I exercise I get chest pains, someone know what this is? I used to go to the gym 4 days a week. I also used to do aerobics but after I started to get pain in my chest so I had to stop all exercise activity. I have had billions of tests to my chest etc and they cannot find anything. I found out though that I have a merour. maybe spelt wrong. I cannot exercise and really want to to get into shape and loose weight as not exercising has caused me to put on weight quickly.