In Volume One David teaches you a big number of exercises for pectoral muscle, shoulders, and triceps. He performs various push ups: wide, medium, and close.
An underwear model needs a great butt. In Volume Two David teaches you exercises which work your butt. Look at him - the guy must be right!
You find David Rich's Underwear here:
www.RichUnderwear.com
www.UnderwearDVD.com