[問題] 練胸部怎練出事業線?
如標題
看到一些人兩鄉之間那條線很深很明顯把兩胸肌區分開來
很好看很羨慕
這條線怎麼形成的呢?
有任何建議嗎?
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肌肉不是這麼好練的
肥肉還是肌肉，太壯文請附圖片比較好給建議!
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