Hi, thanks for writing to HCM. Your calf cramp might be related either to the lumbar disc herniation or due to the excessive strain imparted as a result of exercise. Activities that might help prevent leg 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 • These cramps at times may be associated with POTASSIUM deficiency and so foods such as bananas, potatoes, prune juice and dried fruit are to be taken as dietary supplement. • 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. If your symptoms are not resolving with the above measures, consult your family physician for a detailed evaluation and further management. Hope this information is helpful. Good day