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The Role of Genetics in Fitness: Can Everyone Build the Same Muscles?



The Moment I Realized the Importance of Genetics

When I first started working out at the gym, I had one primary goal: to build a big, muscular body like my favorite athletes. I followed every workout and diet plan with discipline, hoping to achieve the same results. But after a few months, something started to feel off.

Reyno, my gym buddy who started at the same time as me, was seeing results much faster. His chest muscles were becoming defined, and his shoulders were growing broader. Meanwhile, my body showed little change, even though we were following the same program. Frustrated, I finally vented to Reyno. He said, "Maybe my genetics favor upper body development. But look at your legs—they're way bigger than mine."

 The Role of Genetics in Fitness

This was the first time I truly understood that genetics play a significant role in fitness. Muscle fiber type, fat distribution, and even the shape of muscles are largely determined by our DNA.

Some people have more type II muscle fibers (fast-twitch), which respond better to strength training. Others might excel in endurance due to a dominance of type I muscle fibers (slow-twitch). These genetic factors can significantly impact how our bodies respond to different forms of exercise.



 Aji’s Unique Fitness Journey

Another gym friend, Aji, had an interesting story about how he learned to embrace his genetic uniqueness. "I used to envy people with clearly defined abs," he said. "I kept wondering if I wasn’t training hard enough. But after consulting a coach, I learned that my body naturally stores more fat around my stomach."Instead of chasing a specific aesthetic, Aji shifted his focus. He began working on improving his strength and performance. "I eventually managed to deadlift 200 kg, and that felt way more satisfying than having abs," he said with a laugh.

 How Genetics Shouldn’t Be a Barrier

While genetics influence results, they’re not a reason to give up. What I’ve learned is that everyone has their own unique strengths. Focus on what you can control—like hard work, consistency, and dedication. It’s also important to set realistic goals and appreciate the progress you’re making, rather than comparing yourself to others who might have a genetic advantage in certain areas.

 Final Message

Genetics are part of our story, but they’re not the whole story. As someone wisely said to me: "You don’t have to be someone else to be successful. Be the best version of yourself."Your fitness journey is yours alone, and embracing your unique traits will make the process more rewarding. Focus on growth—both physical and mental—and celebrate every step along the way.

 

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