[問題] 關於重訓的"程度"
今個兒去了學校的健身房，試了一套訓練三頭肌的器材
一開始最輕的鐵塊練起來似乎不太費力，但是大概過了15分鐘，手臂就會點酸的感覺
休息了一下，再加上一個鐵塊後，大概5分鐘就不行了....好酸@@
想請問各位版友，我是該用一個鐵塊就好，持續練個20分鐘
還是要兩個鐵塊，短時間訓練比較好呢?? (原po是女生)
感謝各位~~
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