Wider = chest activation
Narrower = triceps activation.

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Added on November 12, 2009, 11:39 pmbut then I only do push ups at the end of my chest day training, just to squeeze the final drops of energy out of my chest.

This post has been edited by Florian: Nov 12 2009, 11:39 PM

For me, what I do is, since energy levels are at its highest before you do anything, so I take that opportunity to do the heavier lifts first during chest day ie incline press etc, then after the training, to further destroy the chest I'd do some minor work, like push ups.