One thing you can do is simply monitor yourself for signs of "speeding up" too much. There needs to be a balance between being an alarmist -- seeing symptoms everywhere -- and ignoring that you really don't feel very good. Of course, sometimes that's detox. It can be hard to sort through what's happening. But here's a partial list of what being hyperthyroid might feel like.
If there is too much thyroid hormone, every function of the body tends to speed up. Therefore, some of the symptoms of hyperthyroidism are nervousness, irritability, increased perspiration, heart racing, hand tremors, anxiety, difficulty sleeping, thinning of the skin, fine brittle hair, and muscular weakness—especially in the upper arms and thighs. More frequent bowel movements may occur, but diarrhea is uncommon.