That’s it. Now, genetics can make it easier or harder to build muscle and lose fat. Some people have naturally high testosterone and growth hormone levels, which means faster muscle growth and an overall leaner physique. … Genetics also play a role in the shape of your muscles.
What is it called when you build muscle fast?
Muscle memory describes the phenomenon of muscle fibers regaining size and strength faster than initially gaining them. This occurs because weightlifting permanently alters the physiology of muscle cells in a way that primes them for rapid regrowth.