firstly you will get to take ur shirt off this is the fun part lol, then ekg little sticky cold pads on your chest sit there for 5 minutes or so. probably made to do some exersize normally treadmill again with little pads on your body, a clip on your finder (heart rate monitor), and a reg (bit like a diving reg or snorkle mouth peace) in your mouth monitoring breathin, you may then get a eco scan (like a pregnant person gets every couple of months), and if your really lucky your will get a LPHR (tape, CD or mp3 recorder with again sticky pads on your chest for a day or so to record your heart for a while, you will also be asked to record when u get pains etc so they can compare timings with the recordings). dont worry to much about it bru.