During my 1.5 year stint in Spain, I jumped rope almost every day. My ARMS NEVER LOOKED BETTER. and that means a lot, since I could hardly fit into a "girl shirt" during high school because my arms easily buff up too much. All of that isometric work really helps my arms to look toned, but not TOO BIG.
October Fitness Challenge (if you choose to accept): Jump off! Beginning October 13th to October 17th (that's just Monday to Friday) we'll see who can jump the most. Count your jumps for the whole week and the winner will get a prize of my choice.