What are the best exercises to help gain definition between the

Why is the bicep more defined than the triceps? Both store fat too, and most people store biceps fat more than triceps, but the biceps are still more defined. - Quora

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Can you increase how wide your arm is, or the thickness of your arm, by lifting weights? Would dumbbells and maybe barbells be enough? - Quora

Is it normal for my arm muscles to be growing up and down and not side to side much? They look almost flat until I bend my arm and flex it, that's

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What exercise can I do to fill the gap between the bicep and forearm? - Quora

Which exercise builds the gap in the lower bicep? - Quora

What are the five key exercises for strengthening the shoulders and back with dumbbells? - Quora