One twin only does hammer curls. The other twin only does preacher's biceps curls. Will it make a difference for how their arms look? - Quora
Hammer curls: close to the body or perpendicular to the torso, what are the differences? : r/Fitness
Hammer curls: close to the body or perpendicular to the torso, what are the differences? : r/Fitness
![Serious question: is there a difference between doing curls lying down on a bench vs standing up or sitting upright? : r/gymsnark Serious question: is there a difference between doing curls lying down on a bench vs standing up or sitting upright? : r/gymsnark](https://preview.redd.it/9ssocf0xmbt71.jpg?auto=webp&s=a8c982893e2c0a90c00a76a2363da22f672bffef)