Jan
11,
2013
仕事で筋肉痛
ちょっと事情があり、このペンチを6000回握り締める事になりました。
これはLANケーブル加工用の工具で、せいぜい一日に100回位しか
操作しませんが、これを約5日間で6000回!
良い握力トレーニングです
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