read the fucking sticky
Oh look what I found in the sticky
http://www.exrx.net/Kinesiology/BenchPress.html
Dumbbells are harder to use because your muscles have to stabilize the weight, barbells do it for you. Plus you can do the squeeze press with dumbbells, which is a neat little muscle builder that builds size the barbell can't. Go to exrx.net to learn about the sternal and clavicular heads up the pec major. There's nothing wrong with switch between barbell and dumbbell. I'm back on the barbell and off dumbbells for awhile and I'm doing fine. Be careful with dips and decline press though. If your back isn't strong enough, your anterior deltoid can get pulled forward and you risk injury. You need to balancing whatever push movements you are doing with pulling exercises. If you're going skip leg day, skimp on rows and pull-ups, and try to do every bench movement in the bible, you're going to end up in an operating room meeting the team of surgeons that are going to fuse whatever tendons you snapped back onto the bone.
>>123015
The incline hits the clavicular pretty well. And far as decline bench pressing (and dips) working the lower portion of the pec, I think it does. That's just from experience, but I think some of the 'science' behind people hitting all these crazy angles is bullshit. I just do flat bench and OHP. If I do incline/decline, I only do 2-3 sets of each and no flat bench, but I haven't done that for awhile.