I did not do the shake weight for three days. The rest was good and I found myself able to shake a little faster than before. I struggled a little bit through the work outs but I was able to do the final workout on the men’s dvd without having to switch hands. I forced myself through it. My arms do feel very tired and it was a great work out trying to push myself. It definitely raised my heart rate. So far I am satisfied with Shake Weight and I am glad I purchased it.