Testosterone increases muscle mass. We all know about testosterone’s ability to increase muscle mass and strength. That is because testosterone is increasing muscle protein synthesis. Testosterone decreases body fat and it is playing an important role in regulating the speed of the metabolism, insulin and glucose levels.

Testosterone increases muscle mass. We all know about testosterone’s ability to increase muscle mass and strength. That is because testosterone is increasing muscle protein synthesis. Testosterone decreases body fat and it is playing an important role in regulating the speed of the metabolism, insulin and glucose levels.

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