T Nation

Curved Bicep?

One of my bicep curves inwards toward body, instead of being straight. With my stronger arm, the inner part of my bicep is flat(grew straight up mostly?), so it peaks better.

Is that due to training or just genetics?

Most likely due to how your body was just made. Everyone is different from side to side some more noticeable than others. Unless there is a huge strength difference or pain I wouldn’t really worry about it just keep throwing size on to it. No matter how its shaped a 20in arm is awesome.

[quote]fr0gger666 wrote:
One of my bicep curves inwards toward body, instead of being straight. With my stronger arm, the inner part of my bicep is flat(grew straight up mostly?), so it peaks better.

Is that due to training or just genetics?[/quote]
Genetics. Don’t sweat it.

Lots of guys, even the successful dude pictured above, have two different-shaped biceps.

Wow. Was just gonna post this question.

Bicep peak on the right is really coming along. On the left just like OP, its like it “sags” toward the body. I was thinking it was due to a lack of left arm MMC (Right handed). Its much harder for me to “squeeze” the left bicep overall. There is no noticeable strength difference when using DBs though.

Read Mr. Colucci’s article about symmetry will try some of those techniques but now I wont beat myself up since its genetic.

[quote]giograves wrote:
Bicep peak on the right is really coming along. On the left just like OP, its like it “sags” toward the body. I was thinking it was due to a lack of left arm MMC (Right handed). Its much harder for me to “squeeze” the left bicep overall. There is no noticeable strength difference when using DBs though.[/quote]
If they’re comparably sized (as checked with a tape measure) and no significant strength difference, then it’s probably a genetic difference. But if we’re talking something like a 3/4-inch difference in size, that’s a symmetry issue that you can try addressing/correcting.