Why bodybuilders buy the thyroid hormone triiodothyronine T3 and thyroxine T4?

When bodybuilder came to us to buy T3 and T4, I was really a little confused. Can thyroid hormone help build muscle or build strength?

What isThyroid Hormone Triiodothyronine T3?

T3 stands for triiodothyronine, which is the physiologically active form of thyroid hormone. About 20 percent of T3 is secreted directly into the bloodstream by the thyroid gland, while the remaining 80 percent is produced by converting glandular hormones in organs such as the liver and kidneys. Its main functions are as follows:

1. Improve body metabolism and heat production, increase heart rate, respiratory rate, etc.
2. It plays an important role in nervous system development and maturity, especially in brain development.
3. Regulate protein, fat and carbohydrate metabolism.
4. Stimulate skeletal muscle contraction and bone development.

What is Thyroid Hormone Thyroxine T4?

The full name of T4 is tetraiodothyronine, which accounts for more than 90% of the total thyroid hormone. It is the storage and transport form of thyroid hormone and needs to be transformed into T3 outside to have physiological activity.

The main functions of T4 are as follows:

1. Through the conversion of peripheral tissues into T3, the physiological effects of T3 can be played.
2. Part of T4 can directly act on T4 receptors and participate in the regulation of pituitary-thyroid axis.
3. As a form of transport and storage of thyroid hormones, it plays a saving role.

Why Bodybuilders Buy the Thyroid Hormones T3 and T4?

No matter Sarms or Steroids, when bodybuilder uses them, it mainly uses its anabolic activity. Thus, it can be seen that metabolism plays a role in bodybuilding. At the same time, the reason we often call “middle age spread” is because as we get older, the body’s metabolism gradually slows down, which leads to the accumulation of fat.

From the above functions of T3, its functions for bodybuilder can be summarized as follows:

1. It improves the metabolism of the whole body, helps to avoid the accumulation of fat, and plays the role of fat reduction.
2. When it improves the metabolic level of the body, it provides enough energy to bodybuilder so that they can better devote to exercise, and better exercise can better build muscle.
3. T3 increases the contractility of the heart, helping to cope with the increased cardiac load that may occur during strenuous exercise or other conditions.
4. T3 also stimulates the contractility of skeletal muscles, and the enhancement of muscle contractility enables bodybuilder to have higher athleticism, more explosive power and endurance.
5. It regulates protein metabolism, helps maintain a dynamic balance between protein synthesis and decomposition, and prevents muscle loss.

So, when bodybuilder bought T3 and T4, it probably wasn’t for hypothyroidism, but for bodybuilding.