As long as you leave the money in there, it will keep earning more. If you left that same $100 in a 6% interest account for 40 years, you d have $1,028, and your annual interest earnings would be more than $50 per year.The Rule of 72. One simple way to see the power of compound interest is through the rule of 72.et's look again at that $100 in an account earning 6% interest. The $106 you have after the first year would earn 6% again the next year -- $6.36, or a 36 cent increase. After you add that to the total, you would have $112.36.
Also, when the blood supply to the leg muscles is compromised, specifically from a build-up of cholesterol plaques in the arteries, the muscles will cramp. The cramping of the calves during exertion is something called claudication, which heralds the presence of peripheral artery disease, or PAD.
A mineral deficiency of calcium and/or magnesium is probably the most frequent cause of night leg cramping. Cramps are often caused by a lack of potassium, resulting in an electrytic imbalance. Strenuous exercise with sweating and diarrhea or other bowel disease may cause loss of potassium and other important minerals.