Barefoot, good for you. I read of a doctor claiming that if we all got our magnesium, hospitals would be emptied.
I make ionized magnesium water- instructions easily found on the net. If consists of club soda and Milk of Magnesium. I have read that Magnesium Chloride is the best form for taking internally and externally, as a body rub that is absorbed. Magnesium is the great regulator of the electrolyte family (sodium, potassium, Magnesium, calcium and phosphorous). However, one can only store so much and the excess is evacuated via the bowels, though it might also be reabsorbed if the BM is not stupendous. (The other electrolytes are then best regulated when magnesium is readily available.)
Vitamin C is stored in the linings of the stomach and intestines but an excess (in double digit grams) has the same effect loosening the bowls; so I wonder if magnesium isn't to a degree also stored in those linings.
Magnesium needs to be taken throughout the day so a pocketful of weaker tablets might be advised, a bottle of the MoM Club Soda water always on hand or Magnesium Chloride rub from a small bottle.
Recipe for ionized MoM concentrate. Chill MoM & 2L quality Soda Water. Add 90ml MoM. Cap and shake 30 seconds. Refrigerate half hour+. Re-shake. Bottle should collapse as magnesium ionizes.
MoM drink. Add 100ml concentrate to 1L/1quart water. Sip throughout day. If bowel evacuation becomes a prob, add less concentrate. I also add 100g (3.5 oz) cranberry concentrate or black cherry juice, lemon juice, stevia or Xylitol and 1/2 tsp baking soda which also helps the body with CO2, though I don't drink within two and a half hour after a meal so as not to compete with acids needed for digestion. We don't think of CO2 as being important (some governments have declared it a toxic poison) but our stomachs work hard to make it and all life is dependant upon it. It also helps alkalizing the body.
You are protecting your heart with the regulatory magic of magnesium, preventing and clearing out calcification, calming your nervous system and I suspect your heavy perspiration might improve. Test your handwriting before and after taking magnesium. Some are so attuned to their need for magnesium they sense when they are deficient. Sensing is an acquired skill, especially in these times of highly commercialized processing of foods.
Are you constantly thirsty?
When I was around your age I lived in the tropics and I was often thirsty and sweated profusely. I couldn't get enough water. Then one day a local shop keeper must have recognized my dilemma and added salt to my lime drink. I was too thirsty to send it back and upon drinking it, my thirst was quenched. You might also be an O blood type and a higher fat, low carb regime might be in line. Experiment on your own personal laboratory (your body). Continue to listen wisely to the signals your body sends, Barefoot, and you will do well.
My mum was rushed by ambulance to emergency in 1972. She had a severe potassium deficiency and made three more emergency trips before I learned about magnesium's regulatory importance. She lived twenty-two years hospital emergency free using magnesium until she was being assessed in a hospital setting for independent living. She was not allowed to bring her magnesium with her and died three days later from heart stress. The importance of the great regulator cannot be over stressed.