Thanks! Time went back on February in 2019. I still remember when I was returning home from work, my father said to me that my arm is too thin to lift a heavy object(胳膊太瘦以至于难以提起重物). At that time, I realized that I need to change myself. Then I went to the fitness center(健身中心) and did some basic strength training(做一些基础的力量训练). At first, it was really tough to do these exercises due to my limited body strength. However, following the guidance of fitness instructor(健身教练), I know how to exert force correctly(如何正确发力) and use different fitness equipments(使用不同的健身器材). Three months later, my arm is no longer that thin and I can lift at least 10kg dumbbell using one arm(用一只胳膊举起10公斤重的哑铃), which is better than 5kg dumbbell before.
这是一个从 https://www.zhihu.com/question/585259982/answer/2934788078 下的原始话题分离的讨论话题