Muscle next to bicep

[Yawz]

Hey, I was wondering if anyone could shed some light on what the muscle next to the bicep is called, on the inside almost coming up towards the armpit.

Also, the one on my right arm is starting to bulge out, is this a result of bad form?

Thanks, your answers are appreciated.

[HeavyMetalLover]

Hey, I was wondering if anyone could shed some light on what the muscle next to the bicep is called, on the inside almost coming up towards the armpit.

Also, the one on my right arm is starting to bulge out, is this a result of bad form?

Thanks, your answers are appreciated.

Is it the part below your upper forearm (biceps/triceps), when your palm is facing up?

I've been searching the answer to that question too :P.

Or are you talking about the part at the side of your shoulder, just above your upper arm? If that's so, it's the side delt.

[Yawz]

Yeah, when my palm is facing up its on the inside where the shoulder meets the bicep, almost on the side of the bicep right at the very top of the arm and it sticks out like crazy.

I don't understand why its on my right arm but not my left arm unless its a form or genetic issue.

[hulkinout]

If I'm picturing this correctly, it should be the lateral head of the tricep ("the horseshoe").

[Austere]

I think what you're talking about is just part of the biceps, but I can't be sure unless I have an anatomical diagram and a clear idea of what you're talking about.

[Yawz]

This part if this works correctly

[ManVsIron]

This part if this works correctly

Pretty sure that's the Coracobrachialis.

[Tyciol]

This part if this works correctly:

Pretty sure that's the Coracobrachialis.

I guess, or the short head of the bicep?

I'm suddenly very freaked out with how the pec major wraps around the biceps tendons like this. I've never noticed that before now.

[Yawz]

Is there any way to stop the Coracobrachialis from bulging out, assumed as overdeveloping?

[ManVsIron]

Is there any way to stop the Coracobrachialis from bulging out, assumed as overdeveloping?

If you're doing cable crossovers in such a way that you're bringing the handles down more vertically towards your crotch area... stop doing that.

That's how a lot of people inadvertently build that muscle.

There's nothing really wrong with it, though... unless you go too far somehow. But if you have decent biceps, it shouldn't be too much of a proportion issue.