Eric T.
I too have suffered from cramps. I am in decent shape. I stayed hydrated. Electrolyte drinks didnt work. Salt stick tabs didnt work but, my shirts had nice white lines on them. Hot shot is likely snake oil.
Usually i suffered from bicep and foot cramps while climbing. A while back i suffered a wicked hammy cramp while lying in bed. Several hours post bike ride. Not a long ride either by my standards.
I told my dad about my leg cramp. He said "oh yeah, i used to get those. Now i take Calcium. All gone." Whatever Geezer.
So, i skeptically started calcium. 600mg calcium carbonate with d3 from Costco. ALL CRAMPING HAS CEASED. I am sure i get the rda of calcium in my diet. Guess i needed some extra. This worked for a friend of mine too.
All those electrolyte products focus on sodium and potassium. Not Calcium or Magnesium. Also electrolytes and important.
If im gonna have a big day i take a couple calcium instead of one a day. Give it a try. Its a cheap experiment. Also, i started on mg too. Be careful with mg. it softens stools. I take one in the am. Theres a fine line between soft and uh oh.