Regaining the ability to sweat is a good thing, it shows that your body is working properly again... getting healthy. So Congratualations!
After a step aerobix class, my clothes are damp, and my braid is literally dripping... I always wear a head band when I work out, the one or two times I forgot it, I had to make a headband from papertoweling so that sweat would not get in my eyes.
Before I got on thyroid hormone, lack of sweat when working out, was a symptom of my untreated thyroid disease.
Racing heart... when you're just standing around or sitting there, anxiety, feeling faint, these are all symptoms of too much thyroid hormone. I saw your question about sea weeds... it can also be from too much iodine from this source. Sea weed is good with crucifers,(since the deplete iodine) and in very limited amounts. Like a teaspoon of dried... and not everyday, but occasionally.
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