Anabolic processes tend toward "building up" organs and tissues . These processes produce growth and differentiation of cells and increase in body size, a process that involves synthesis of complex molecules . Examples of anabolic processes include the growth and mineralization of bone and increases in muscle mass. Endocrinologists have traditionally classified hormones as anabolic or catabolic, depending on which part of metabolism they stimulate. The classic anabolic hormones are the anabolic steroids , which stimulate protein synthesis and muscle growth, and insulin . The balance between anabolism and catabolism is also regulated by circadian rhythms , with processes such as glucose metabolism fluctuating to match an animal's normal periods of activity throughout the day. 
Steroids have been noted to exert “hazardous” effects on the structure and function of the heart muscle.
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Anabolic steroids and long-term effects of steroids may also have a huge impact on the psyche.
There are two of interests that fill the category of the most powerful muscle building steroids of all but the king of kings is that of Trenbolone . Because of Testosterone’s efficiency it is a close second, a very close second but Trenbolone is 400 times more powerful than testosterone; that’s not an arbitrary number, it is literally 400 times more potent and powerful. Not only are the various Trenbolones the most powerful muscle building steroids of all, they are the most potent steroids to serve any cycle for any purpose.