Why is it harder for some people to build muscle than others

How do muscle cells grow after a workout? And how do your genetics affect your experience as a gymgoer?

同样举铁三个月，为什么别人成了大力水手，我看起来毫无变化？-36氪

Why do some people gain muscle faster than others when working out (weightlifting)? - Quora

9 Scientifically Proven Ways to Build Muscle Fast

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R2 Total Fitness, Gym/Physical Fitness Center

同样举铁三个月，为什么别人成了大力水手，我看起来毫无变化？-36氪

Building muscle with exercise: How muscle builds, routines, and diet

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Why is it harder for some people to build muscle than others?

/fit/ - >CICO is real >I live with a roommate, we're both - Fitness - 4chan

The Science of Muscle Recovery: How Long Should You Rest Between Workouts?

Why do certain 'body types' build muscle faster than others? Is it due to genetics? If so, how? Is it because of more testosterone production? Do certain people grow more muscle from