For the past several months I have been experiencing symptoms of tachycardia- resting heart rate of 150's, constant sweating, insomnia, increase body temp,hand tremors, brittle nail/hair and headaches. I also have hypothyroid symptoms such as constipation, sluggish, forgetfulness, inability to concentrate and I have also gained 25 pounds in 2 months (not due to increase in intake), I also work out everyday and have a personal trainer.