Pickle juice
Brine and vinegar-based fluid used to pickle veg is loaded with salt, calcium and other electrolytes, such as potassium and magnesium. Some studies have found pickle juice has cramp-preventative potential.
Artichoke
Contains magnesium and potassium, both essential to maintain electrolyte balance in the body, and therefore prevents cramp.
Nori seaweed
Edible seaweeds such as Nori contain a balanced spectrum of electrolyte minerals, including sodium, potassium, calcium and magnesium. Post-workout, Nori seaweed in sushi or wraps helps to restore electrolyte balance and may reduce cramping.
Halibut
Halibut is not only an excellent source of lean protein, but also of the mineral magnesium, which, along with calcium, is crucial to the normal contraction and relaxation of muscles.
Marmite
Marmite is high in salt, as well as many B vitamins, including B12. Salt is the main electrolyte lost during sweating and sodium imbalance can cause cramp. Replenishing this mineral keeps electrolytes balanced in the blood, reducing tightness and cramping.