Big deltoids

I’m someone who’s very slim trying to gain weight. I notice that when I look at my arms my deltoids(the upper part of my arm) are firmer and stronger than the rest of my arm.

While my whole arm is toned that part of my arm is the only part that’s not jiggly and feels extremely hard.

Is this normal or do I have a muscle imbalance?

submitted by /u/idkwhat2putasmyuserr
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