Recent Examples of rectus from the Web
This move works both the internal and external obliques as well as the transverse and rectus abdominis, says Mansour.
Within your core, this push-up variation specifically targets your obliques (the muscles on the side of your abdomen) as well as your rectus abdominis (aka, your abs, the muscles that run vertically on your abdomen).
Another factor that can affect the size of a woman's bump is a condition called diastasis recti, which is when the left and right sides of the rectus abdomens muscles separate.
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medical Definition of rectus
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