messing up my cardio!

[thestart09]

when im in the gym, say today for example, i just worked my chest for like 45mins, then went to do 45 minz on treadmill, but for some reason i always get a dull ache on my shoulder when running after weights, and is always my weaker side (left side) the only way to stop the ache is if i fully extend my arm down by myside, it usually fcuks my cardio up because i only end up doing 20minz or so....anyone have this problem? can anyone tell me why this is hapening?

[eatrainrest]

see your physician.. sounds liek you have some sort of shoulder injury

[xavier_888888]

Hmmm... and its only after weight training. Maybe your not doing the proper form while lifting? Have it checked bro.

[thestart09]

hmmm....probs will get it checked out same story today and only worked my arms :S quite strange feeling because it doesnt hurt, its just a heavy ache

[thestart09]

been told its probably a trapped nerve in my shoulder, anyone had this before how serious is it?