刚好最近BB有一篇文章谈到如何训练胸肌，里面有一段谈到这个问题
"Muscles are comprised of tens of thousands of fibers that run along the line
the muscle pulls, but they don't always run parallel to one another or the
entire length of the muscle," says David Sandler, CSCS*D, Director of Science
and Education for iSatori.
"For muscles that perform several functions and pull in different lines—such
as pennated muscles like the pecs—exercise variations must be performed to
activate all of the fibers.
"A particular exercise or angle of an exercise might not stimulate all of
them, at least not maximally. As the angle increases, it changes the fiber
activation pattern. Using the same angles in your chest workout—say the same
fixed benches on incline and decline movements—may not even hit some fibers.
That's why I'm a strong proponent of target training muscles at multiple
angles to ensure every muscle fiber is activated."
翻译就不翻了，简而言之就是改变角度在科学上是有意义的
这一点不只是针对胸肌训练，很多大块的肌群偶尔都可以改变角度练一下
台湾的健身环境比较偏向“经验谈”，很多事都是“我感觉”、“我听说”、“我难过”
但相同的事已经讲过很多遍了，人类的生理构造非常复杂
再加上基因、生活作息、营养等各方面问题
最后就是你的王道不代表套在我的身上还是王道
哪天说不定还有人会跑过来跟你说“我都不练肩膀，靠卧推就能练了”
“我都不练三头肌，靠卧推就能练了”
但就算他真的肩膀大的跟球一样、手臂比大腿还粗
也不代表你也可以像他一样只靠卧推就有这种成果
最踏实的方法还是要自我实践，练一阵子就回头检视成果
没有达到目的就改，有效果就继续
别人的练法再怎么有效，那都是别人的事，参考参考就好