So my husband bought this medicine ball a few weeks ago and I was intrigued. You see, I have this fantasy of having muscular arms...not crazy, manly muscular arms. My arms currently have definition and I tell my kids to beware of my big guns (my arms). They laugh. I laugh. It is all pretty funny.
Anywho, back to the medicine ball....in Men's Health there is a medicine ball workout that I sometimes add to the end of my workout when I have the time and when I am feeling a little sassy. You can find the entire workout here. I enjoy it. It doesn't just work out your arms, it works out every muscle you have and even some you didn't even know you had. :)