Hi, thanks for writing to HCM. Though Hypokalemia (low potassium levels) produces muscle cramps, its not the only cause for muscle cramps. There are numerous other conditions & causes wherein charlie horses present as a symptom. Neurological disorders, peripheral arterial disease, Diabetes, Spinal stenosis, Dehydration, Calcium & Vitamin D deficiency, Exhaustion, Fatigue etc may also produce muscle cramps. So, a detailed evaluation is needed to establish the exact cause of muscle cramps. Some of the activities that might help prevent muscle cramps include - • Drinking plenty of fluids to avoid dehydration • Stretching your leg muscles or riding a stationary bicycle for a few minutes before you go to bed • Massaging the cramped muscle with your hands or with ice • Walking or jiggling the leg • Taking a hot shower or warm bath • Also, calcium fortified foods like seafood and fish, almonds, flaxseed, oats, prunes, sesame seeds, tofu and kale can help to stave off muscle pain & spasm. • Avoid acidic foods and drinks like tomatoes and vinegar which blocks the body’s natural ability to absorb calcium leading to muscle aches & muscle fatigue. Hope this information is helpful. Good day