numb bicep?

[SplitSecond]

my left bicep has been numb for some while now(maybe a month), i can't feel it when i flex, i dunno if me not having worked out in awhile has anything to do with it, but has this ever happened to anyone else?

[Don-Felix]

I guess I'd like to know what you consider "numb". To me, numb means, that I have little to no sensation in a certain area. If I had that feeling anywhere in my body for an entire month, you better believe, I'd go get it checked out.

Ok, that being said, how exactly does it feel? Do you feel it when you poke your biceps with a pencil? Is it tingly like when your foot falls asleep? Do you have any functional deficits (does your arm work correctly, is it as strong as the other arm and as strong as before etc.)?