People also viewed. 1  Talk to a doctor live online for free. 2  Pains in both arms and shoulders. 3  Rash on both arms only.  Both arms ache at 1  night. Ask a doctor a question free online.  Ache in both 1  arms. Causes of swollen both 2  arms. Pains in both upper  arms. Both of my 1  arms ache. Both  arms.
The thyroid hormone process begins when the pituitary gland in the brain produces thyroid-stimulating hormone (TSH). TSH then acts upon the thyroid gland to produce thyroid hormones. The two main thyroid hormones produced are thyroxine (T4) and triiodothyronine (T3). Although the thyroid gland produces more T4 (80 percent) compared with T3 (20 percent), T3 is 300 percent more active than T4 and is the thyroid hormone responsible for increasing metabolism. In fact, much of the T4 is converted into the more active T3 inside the cells of the body.
Your body's metabolism depends on the amount of certain hormones in your body. The thyroid gland is located in the neck, and when active, it releases thyroid hormone that boosts the metabolism and also regulates body temperature.However, when the thyroid gland stops releasing thyroid hormone, the metabolism slows down, which causes fatigue and often weight gain.xercise boosts the thyroid function both during and also hours after exercise. However, without consistent exercise, the thyroid may continue to stop producing as much of this metabolism-boosting hormone.