I was going to add that, but thought better of it. I've a feeling it may be potassium, but it could just be salt. As you say likely to lose more in the heat.I get it often more in the summer.
Bottom line is the body needs fluid/salt/electrolytes, so its always a sign that I try and take notice of .
J
Just checked it is apparently just salt.
Salt Performance | Salt To Stop Cramps | Boulder Salt
Help your athletic performance with our salt to stop leg and muscle cramps. This salt is created for performance! Learn more about Boulder Salt today!
www.bouldersaltcompany.com