The reaction of muscle contraction is based on calcium. The response reaction is based on magnesium. As suggested, dehydration is a big contributor... WATER, distilled, best. From there, as suggested, any source of water and salts should help. One of the overall best is "kelp" as in "seaweed." The salt water of the sea in which kelp grows has practically all minerals and should have the 60 absolutely necessary in human nutrition. Dose is by body weight. 3 or more twice a day for runts. 8 or 10 for the big suckers.
Vinegar, acetic acid will probably have salts dissolved in it. Herbal remedy is based on red pepper/cayenne and in vinegar, commercial, one, is Tabasco. (Supposed to be great for heart cramps as in heart attack.) Common in spice preparations.
And, as suggested, soda or any "bubble drink" (includes beer, darn...) usually has phosphoric acid to "hold" the bubbles and this "binds" calcium meaning you need more, a lot more... best avoided... Phosphorous is the red in red meat, present in "white meat" but not as much... Thus better a cheese burger than hamburger... Luck.