과거에 몰랐습니다. 팔 운동, 바꿔야 커집니다

Hello, I am Lee Taek-min, a graduate of the Department of Economics at Korea University who works as a trainer. I realized this too late. Leaving aside chest and back, having big arms is the best. My goal is to become the bodybuilder with the biggest arms. I have been researching and working hard for a long time to achieve this. I will share what I learned through this process—or, to be precise, what I used to misunderstand. Don't go through the same trial and error I did! ----------------