I also had a big problem with hand cramps. Once I eliminated refined sugar from my diet, the cramping, along with arm pump, magically disappeared. Some may have seen my thread on the YZ forum about this. Other benefits have been the loss of body fat....especially the little spare tire that had latched itself onto my midsection. My belly tummy is as flat as when I was 20 and my endurance and energy levels have soared. Our typical day to day consumption of refined sugar is mind boggling. Take a look at the label on the side of any non-diet soda can. It's killing us!