Different nerves innervate the upper and lower abs and, therefore, this provides them with a mechanism for selective activation. Researcher Bret Contreras has performed extensive research on this very topic. And his EMG findings conclude that the upper and lower abs – beyond a shadow of a doubt – can be selectively emphasized.

Different nerves innervate the upper and lower abs and, therefore, this provides them with a mechanism for selective activation. Researcher Bret Contreras has performed extensive research on this very topic. And his EMG findings conclude that the upper and lower abs – beyond a shadow of a doubt – can be selectively emphasized.

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