24 Male 210lb 6foot. Slightly overweight but I am pretty active. AREA http://i.imgur.com/Y9rKhAE.jpg (maybe even a little more right of the circle) I have been noticing this past week this strange pressure that comes and goes. Sometimes it is constant and sometimes it goes away for a while and comes back. It feels like a slight contraction of my muscle. It does NOT go in sync with my pulse. IT IS NOT PAINFUL AT ALL. It feels like someone is slightly pushing there with two fingers. I have been golfing lately and I use that muscle often when swinging. Does this sound related to my heart? Does anyone know if this sound like it could be an overused muscle above my breast from golf? I also sometimes sleep funny. Maybe a pinched nerve? IT HURTS NOT AT ALL IT JUST IS ANNOYING! Thanks!