Yoga For Thyroid Health Abstract The thyroid gland is located below Adam’s apple just under the skin. The thyroid gland is composed of two halves connected with Isthmus. It is not visible but it can be felt. The thyroid is basically enlarged in normal conditions. It is a very important endocrine gland. It secretes two hormones into the blood. Those hormones are T3 and T4. The secretion of T3 and T4 is dependent on TSH (Thyroid-stimulating hormone). TSH is released