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Answer (1 of 9): Triceps is 2/3 when the upper arm is streched When flexed it's more like 55% triceps, 30% biceps and 15% is brachialis. Of course these numbers are for the average untrained individuals. Many people forget that the brachialis is also a muscle that is part of the upper arm, becaus
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50-year-old muscles just can't grow big like they used to – the biology of how muscles change with age
50-year-old muscles just can't grow big like they used to – the biology of how muscles change with age
What workout helps best with biceps and triceps? - Quora
Why do my triceps always seem to lag behind my biceps? - Quora
Hammer Curls vs. Biceps Curls: The Battle for Bigger Arms - Breaking Muscle
Why aren't my biceps and triceps growing at the gym? - Quora
What kind of dumbbell workout can I do to train the tricep brachii
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Noticed Muscular Imbalances? Here's How to Fix Them Fast.
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