Whats up guys. I've had this problem for years, and just remembered it again tonight.

I dont use the bag but once every two months. However, mid routine, I always get a stabbing pain in the left side of my chest. Behind my heart is the best way to describe it.

I run frequently and this never happens. It happens every time I hit the bag.

COULD IT MAYBE BE SOME SORT OF INCORRECT BREATHING, LIKE A BUILDUP OF CO2 ON THE LEFT SIDE AS I STAND RIGHT HANDED?

Or is my heart exploding from teenage cocaine abuse, ciggarette smoke, and fast food?

QUICK! SOMEONE CASUALLY DIAGNOSE ME WITH THIS LIFE OR DEATH PROBLEM, KNOWING LITTLE ABOUT ME! lol just kidding.

Maybe someone has similar deal?