Here's another CORE + STABILIZER strength building(shoulder) exercise. Training only grow muscle mass is one thing, but training with purpose and activating more functional ability is another. 肩の筋力と安定性強化+体幹強化を全部一つの種目に取り入れました。 筋肥大を目的にトレーニングするのは一つですが、目的を持
