I pulled my left bicep a tad on Monday and have avoided using it since then. I've never pulled a muscle before that I can recall. Anyway, it doesn't hurt, but when I stretch my arms out I can still feel it a bit. At what point is it ok to start trying to use it again? It sounds like a kinda dumb question, but if it's a little sore can I use it without further injury or do I have to completely lay off for a long period of time? I'm sure everyone is different, but your input would help me gauge it.